2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale
2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale__right
2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale__below
2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale__after
2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale_top
2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale__front

Brand
Sennheiser
Color
Black
Connectivity Technology
Wireless
Model Name
MB 660 UC MS
Form Factor
On Ear


Features & details

Features

  • Mobile Unified Communications: For professionals using Skype for Business who require a consistently excellent hands-free communication solution
  • Dual Connectivity: Seamlessly switch between two connected Bluetooth devices for maximum call handling flexibility
  • Worry-Free Communication: Up to 30 hours of battery time (Includes an audio cable for flawless functionality without charge)
  • Speak-Focus Technology: 3 digital microphones work in tandem to deliver crystal clear sound, regardless of background noise
  • Sound Effects Mode: Choose between a host of personalized sound effect modes (Club, Movie, Speech, Director) for sound that suits your medium
  • NoiseGard Technology: With Adaptive Active Noise Cancelling (ANC) built in, the MB 660 automatically adjusts your headphone''s noise reduction for maximum productivity without isolation
  • Peace of Mind: With a 2-year warranty on all headsets (including batteries), you never have to worry about the quality of your bluetooth headset
  • Touch Pad Call & Media Controls: The on-headphone touchpad allows easy functionality with simple swipes and taps for call & media control
  • Advanced Own-Voice Detection: An own-voice detector isolates the sound of your voice among any and all background noise to allow for maximum speech intelligibility
  • Comes Equipped: All MB 660 models come with a USB PC dongle, USB cable + Micro USB connector, 2.5mm & 3.5mm headphone jacks, in-flight adaptor, and a carrying case

Product information MB 660 UC MS

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Inspiration from this brand

Sennheiser
Neumann Monitors have been developed true to the Neumann philosophy for monitor loudspeakers. Every component, every shape, every signal and every wave motion is a consequence of this philosophy. No form or component is there without reason. There are hundreds of tangible reasons built into our monitors, which all stand for exceptionally pure and neutral sound. These include, for example, curvatures of the housing that reduce edge diffraction. Also included is the pistonic output of the bass driver which does not give rise to harmonic distortions, even with the highest sound peaks. Some of these reasons are obvious in the monitors. Others Neumann prefers to keep to itself. But together, each can be heard – sound professionals in both large and small studios all around the world can testify to this.
Looking for a professional quality cardioid condenser microphone for home, project, and professional studios? The #MK4 is the best choice.
Your partner on stage. #e906
Our wireless all-in-one system for music, theatre and speech combines easiest handling with reliable transmission and professional live sound — for an unmatched price.
Neumann Monitors have been developed true to the Neumann philosophy for monitor loudspeakers. Every component, every shape, every signal and every wave motion is a consequence of this philosophy. No form or component is there without reason. There are hundreds of tangible reasons built into our monitors, which all stand for exceptionally pure and neutral sound. These include, for example, curvatures of the housing that reduce edge diffraction. Also included is the pistonic output of the bass driver which does not give rise to harmonic distortions, even with the highest sound peaks. Some of these reasons are obvious in the monitors. Others Neumann prefers to keep to itself. But together, each can be heard – sound professionals in both large and small studios all around the world can testify to this.
Looking for a professional quality cardioid condenser microphone for home, project, and professional studios? The #MK4 is the best choice.
Your partner on stage. #e906
Our wireless all-in-one system for music, theatre and speech combines easiest handling with reliable transmission and professional live sound — for an unmatched price.
THE MODERN STUDIO WORKHORSE - The TLM 107 is a reference class microphone for vocals and instruments with breathtaking realism. Five polar patterns plus variable pad and low cut settings make the TLM 107 exceptionally flexible. And with a dynamic range of 131 dB the TLM 107 captures anything from a slight whisper to massive drums without unwanted noise or distortion.
With the IE 400 Pro, you can reliably locate yourself in the mix and hear every nuance of either voice or instrument, even on the loudest stages.
Upgrade your existing analog KH-line studio monitors with automatic alignment and phase linearization. Adding the KH 750 DSP subwoofer, stereo sets of analog KH-Line monitors, too, can be used with the MA 1 – Automatic Monitor Alignment!
Hey, mister DJ – put a record on. Meet the Sennheiser HD 25.
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Customer Questions

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Q: Do headphones switch to mono or lower quality audio when the microphone is enabled? This …

A: Good day, and thank you for your question. Bluetooth is not universal, being made up of p…

Manufacturer Sennheiser USA Technical Suppo… | 3 years ago

Q: What is the difference between connecting with bluetooth on the laptop/pc vs the dongle? …

A: Hi Eric,

If your laptop has Bluetooth built in, then it should work the same as connect…

Seller Leitner Headsets | 4 years ago

Q: What are the differences between the mb 660 and the pxc 550?

A: One huge difference is that the microphone in the 660 is a LOT more sensitive than the 550…

Darryl | 2 years ago

Q: Is the usb cable only good for charging or it can also be used to carry audio+mic when plu…

A: Yes, the USB cable can be used for audio as well.

Michael Schilling | 2 years ago

Customer reviews

4.2 out of 54.2 out of 5
166 global ratings

Top reviews from the United States

Wayback Machine
4.0 out of 5 starsVerified Purchase
A competent, noise-cancelling headset for office or travel use
Reviewed in the United States on January 20, 2019
Style: MB 660 UC MS
Sennheiser MB660 MS: This wireless, noise-cancelling headset can be used for listening or phone conversations, or for when you just need things to be quieter. I compared it to a set of Bose QC35, Plantronics Voyager 8200, and Sennheiser PXC550, which are in the... See more
Sennheiser MB660 MS: This wireless, noise-cancelling headset can be used for listening or phone conversations, or for when you just need things to be quieter.

I compared it to a set of Bose QC35, Plantronics Voyager 8200, and Sennheiser PXC550, which are in the same price range and with reportedly similar capabilities. The Sennheiser PXC550 and MB660 look identical but are not. If you are looking for a headset for use with Skype, Lync, or other telephony applications on a computer, focus on this unit (MB 660 MS) or the Plantronics set. The PXC550 and Bose sets are not so good at that.

I have been using it intermittently for about a month, in an office setting and while traveling by air.

Cons:
- Touchpad control with context-sensitive swipes, taps, and holds. It''s easy to do something without meaning to (like hanging up the phone, redialing, turning on or off music, turning off noise-cancellation). Very annoying, and almost a deal-breaker right there. It took me several days to get used to them, after which they were fine
- There are some mechanical controls (a button and two mechanical slides) for less-frequently used functions. These controls are TINY. It''s hard to even find them, much less see what they are set to.

Pros:
- Music sounds great. Clearer than the Bose or Plantronics sets. comparable to the other Sennheiser
- Noise cancelling is very good. Not quite as good as the Bose.
- On/off switch when you fold/unfold them. If they''re folded they''re off. Not folded, on. No worries about whether you left them on to run down the batteries.
- Bluetooth connection to phone works well, pairs easily, and has reasonably long range.
- USB/dongle connection to computer works well with Skype and Webex.
- Comfortable to wear. I have a large head and fairly large ears, and the earcups fit over nicely and seal well, and my ears don''t overheat
- Comfortable to listen to. They don''t make that pressurized feeling that Bose users sometimes report (I noticed it also)
- Battery life seems good. Sennheiser claims 30 Hrs. I''ve used mine for about 20 without a recharge. Recharges with a standard micro-USB cable.
- Feels solidly made. Hinges, slides, and swivels move smoothly, and feel like they could stand some aggressive use.
- Comes with a hardshell carrying case. The case is comparable in robustness to the Bose case, and is much nicer than what comes with the Plantronics or the other Sennheiser.

Other comments:
- Though it can connect to a computer via the computer''s internal bluetooth, telecoms apps like Skype and Webex don''t work well with this unit unless the connection is made through the (included) bluetooth/USB dongle.
- The noise cancelling is adjustable, in case you want to dial back the effect. The adjustment can only be made via a phone using the Sennheiser app.
- Can also be connected to phone or computer by USB cable or standard audio cable. Automatically turns off bluetooth when a cable is connected, which is good for use on airplanes.
- Standard audio cable works even when the battery has run down, so it can be used for listening to music in that situation. Probably would not work for phone calls. I have not tried either.
- The Sennheiser app can be used to adjust equalizer settings on other speakers that connect to your phone, such as the phone''s internal speakers or a car''s bluetooth. Each speaker is adjusted independently.
- There is an auto-pause feature that is supposed to pause your music when you take off the headset. I found that it stops and starts the music inconsistently. That feature can only be turned on or off using the app, and by default it is off.
- A much less expensive alternative is the Audio-technica ATH-ANC7B SVIS. It is a step below the Bose in sound cancelling and a step below the Sennheiser in sound quality, needs a wire for connections and doesn''t have the fancy digital features. But at <1/2 the price it is quite serviceble.
38 people found this helpful
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Buk
5.0 out of 5 starsVerified Purchase
Great in an open and noisy office environment.
Reviewed in the United States on March 7, 2017
Style: MB 660 UC MS
I took a shot and purchased these on my own for the open office environment, where I sit less than 6 feet away from multiple users. I use these in an office of about 10 people where any one of us could be on the phone or having a desk meeting. These allow you to talk on the... See more
I took a shot and purchased these on my own for the open office environment, where I sit less than 6 feet away from multiple users. I use these in an office of about 10 people where any one of us could be on the phone or having a desk meeting. These allow you to talk on the phone and feel like you are in an office all alone. You can also just listen to music, webinar, or listen to training all while not interrupting anyone else in the office More importantly with the noise canceling they can''t interrupt you. Sitting right next to someone talking and not hearing them anywhere except the conference call is amazing compared to previous headsets. I use them with Skype for Business.

This headset has had such a positive impact in our office, so much so that we purchased 6 sets for the entire staff after I purchased mine.

One improvement idea would be to have some sort of light on the ear pieces that could show when you are on a call.
26 people found this helpful
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Eric N. Hall
2.0 out of 5 starsVerified Purchase
This product is not ready for consumer use
Reviewed in the United States on April 3, 2018
Style: MB 660 UC
This product has multiple flaws that lead me to not recommend it. I did return the product because of the significant flaws. I bought this product to use for both travel listening to music, blocking out the noise in the office while I work, and to use for my many... See more
This product has multiple flaws that lead me to not recommend it. I did return the product because of the significant flaws.

I bought this product to use for both travel listening to music, blocking out the noise in the office while I work, and to use for my many conference calls.
The mic is better than the Bose equivalent for sure. The sound quality was about the same as the Bose, but I am no audiophile. The quality and construction seemed good. The sidetone was better than the Bose by a considerable amount, but was still not very good considering the price of this product.

But, then the problems.

First, the touch pad on the ear cup was erratic in it''s response to commands -- taps and swipes. For example, it has a mic mute option by swiping. It would take multiple swipes to get it to recognize the command. This was not the only command that it would refuse to acknowledge, but it was the most important to me.
Second, the mute function would not work at all with GoToMeeting connected. You could swipe to mute, and the voice would tell you the mic was muted, but then it would immediately say that the mic was unmated. Nothing you could do could get it to stay muted. I want a physical mute on the mic and since this feature was broken, it really diminished the value of the product for me.
And last, the device kept crashing. It would become completely unresponsive. The sound would cut out and stop. It was locked up. I had to power it off and back on again to get it to work.

Overall, both this unit and the Bose QC35 are very disappointing given the price level. Both have serious flaws that make them utterly unusable as a conference call device. They both seem OK for listening to music and they both had good noise cancellation. But, they might as well have not had a mic installed since those features are very poorly implemented. Like I said, extremely disappointing given the price of these units.
16 people found this helpful
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Andrew Jenson
5.0 out of 5 starsVerified Purchase
Sony XM2''s/3''s, Bose QC 35 1 or 2 vs These In An Open Office? - These WIN
Reviewed in the United States on December 11, 2018
Style: MB 660 UC MS
The ability to pair 2 devices works seamless when walking back to my desk in my office surrounded by other co-workers. The call quality audio is amazing compared to the bose or the sony''s which allowed the person on the other end of the phone call to hear my co-workers... See more
The ability to pair 2 devices works seamless when walking back to my desk in my office surrounded by other co-workers. The call quality audio is amazing compared to the bose or the sony''s which allowed the person on the other end of the phone call to hear my co-workers talking 20 feet away.

These are seriously the only good ANC, with great sound, multi-pairing and a microphone that doesn''t pick up everything else in the background.

I''ve tried all three and while the Sony''s have the best bass, the Bose have the best comfort, these are the best of both worlds.

In a perfect world the Sony XM3''s would have the same Microphone technology as these but I guess sony isn''t there yet..
10 people found this helpful
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Michelle Dill
3.0 out of 5 starsVerified Purchase
Not worth the money. Should have went with Jabra or Plantronics I think
Reviewed in the United States on June 23, 2020
Style: MB 660 UC MS
I bought these because I spent several hours a day in work conference calls. The noise cancelling is good. I have had several issues. It does a horrible job on distance. If I go downstairs and to far into the kitchen or the laundry room, I will lose the... See more
I bought these because I spent several hours a day in work conference calls.
The noise cancelling is good.
I have had several issues.

It does a horrible job on distance. If I go downstairs and to far into the kitchen or the laundry room, I will lose the connection. If I go down the hall, same thing. I was expecting better distance out of it.

It often stops working when moving from call to call. It will be working fine on one call and then I join the next one and Teams says my device isn''t working. I have to take it off, fold out the ears to turn it off and then open the ears to turn it back on to reset it.

Another thing is it''s too loud and I cannot adjust the volume. I have tried moving the blue tooth usb from my keyboard ten key (Kinesis has extra usb ports on it) and to the laptop itself and to the docking station for the laptop and I cannot get it to turn the volume down on phone calls. Even when I turn the volume down, the calls are too loud. It gives me a headache after a while. There is virtually no difference in volume between 5 and 65 on my work laptop.

I got these to use for when I play WoW too which is why I didn''t go with a more office like brand Plantronics. Might need to pick up another set.

Oh AND if I bend over with them on, I get a dial tone I can''t get rid of without resetting them.
2 people found this helpful
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Luke W.
5.0 out of 5 starsVerified Purchase
**revised** Great headphones
Reviewed in the United States on August 16, 2019
Style: MB 660 UC
Update on my old review. Sennheiser sent me a replacement which I have been using for 11 months with zero issues. The mic works perfectly when used with the USB dongle, my calls are super clear and the audio quality is great. With the mic inactive these are top tier... See more
Update on my old review. Sennheiser sent me a replacement which I have been using for 11 months with zero issues. The mic works perfectly when used with the USB dongle, my calls are super clear and the audio quality is great. With the mic inactive these are top tier headphones, with amazing all day battery life. Customer service is top notch. I think I just got unlucky with my first purchase

Revised to 5/5 -- it''s exactly what I was looking for in a headset

*******************************************************************************************************************
I am in sales and I''ve purchased this for work. The sound is amazing, the noise cancellation is top-notch, but the mic is having issues. 2 months into ownership, my clients told me that my mic cuts out every once in a while, never had this issue when it was brand new. I''m dealing with their support, hopefully, it helps, but at this price, you''d want something that works great for at least 2-3 years. I had to switch to my other headphones with a modmic 5 installed, I don''t like to be wired to the computer, but the mic quality and no issues is more important.
4 people found this helpful
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Derek
5.0 out of 5 starsVerified Purchase
Awesome for Office Use
Reviewed in the United States on September 15, 2017
Style: MB 660 UC MS
This headset is definitely worth the investment in my opinion. The noise cancellation is far better than I thought it would be as I''ve experienced the "deafening silence" feeling from other active noise cancellation products, but detect none of that with these. I... See more
This headset is definitely worth the investment in my opinion. The noise cancellation is far better than I thought it would be as I''ve experienced the "deafening silence" feeling from other active noise cancellation products, but detect none of that with these. I wear them hour on end and they are always comfortable. Very soft surfaces. Also the battery life is outright astonishing when it comes to modern battery driven devices. I may charge these once a week and that''s just because I don''t believe they still have 50% battery life left thanks to my trained experience with other products. The microphone cancellation is also good. Others in calls can''t hear keystrokes as I take notes in meetings on my keyboard and people having conversations around my cube are also not heard in most situations. If I had to have any gripes they would include that sometimes you have to speak up to have the mic start clearly picking you up and not subtract you via mic noise cancellation. This can be unnerving as it seems so quiet around you due to the active noise cancellation... I sometimes feel like I''m yelling when talking at normal volumes... just an artifact of the environment though. Also sometimes after wearing for a very long time (if you sweat due to warm environments) the "pause music/hold calls when you take off the headset" feature can be a bit temperamental. All in all though I love this headset.
8 people found this helpful
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GE
5.0 out of 5 starsVerified Purchase
Wonderful headset for work and music
Reviewed in the United States on July 28, 2020
Style: MB 660 UC MS
I bought this for use at home on work calls and to listen to music. I wanted high quality sound with comfort for music, and clear quality input and output for work calls. I have no complaints about this headset at all, except that I feel concerned about getting it dirty... See more
I bought this for use at home on work calls and to listen to music. I wanted high quality sound with comfort for music, and clear quality input and output for work calls. I have no complaints about this headset at all, except that I feel concerned about getting it dirty or wet due to the cost of the item.

The battery life is great, I think I''ve gone at least 6-8 hours without needing to charge. It''s only told me I needed to charge the battery once, I''ve only charged it a few times in months of intermittent use.

The music quality is wonderful. I listen to drum and bass, techno, and similar music and the quality is outstanding. There is obviously some bass missing, but there is a decent enough amount of bass to make it very enjoyable vs regular headphones.

I suppose I haven''t been able to test the noise cancellation much being at home, but it may also be that I don''t notice what it''s filtering out. I never notice my HVAC or appliances or outside noises. It does a decent job of preventing people who are trying to talk to me from interrupting my work, but not sure I''d call that noise cancelling.

I use the dongle on my laptop, which is nice because the headphones tell you when it connects, and it prevents the laptop from flapping between inputs and outputs. I am sure it would be annoying if I had a newer MacBook with USB-C instead of regular USB, but I don''t yet. I also use this with my phone, and it works great for calls and music there too.

It has a cool verbal interface where it will tell you with a nice accent "dongle connected" "phone connected" "power off" etc. The ability to pause songs and answer calls just by tapping the right ear is a nice touch. Changing the volume by swiping up and down on the right ear is also pretty cool and convenient.

The ear cavity is comfortable, I can wear these for hours without any issues on either the skin or the ear itself.

I don''t think I could imagine how these could be better unless they figure out invisible materials or make it free.

It comes with a nice case too, but I haven''t had to take them out of the house at all due to the pandemic.
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Top reviews from other countries

VeeZ PeeK
4.0 out of 5 starsVerified Purchase
Balance of business features (talking capabilities) and great sound/battery life
Reviewed in Canada on December 29, 2019
I have a fairly large collection of headphones. I found myself at a new job where I’d need headphones for work. These are pricey. So I debated pulling the trigger. They are worth every penny. The batteries last an exceptionally long time, allowing me to go nearly a week of...See more
I have a fairly large collection of headphones. I found myself at a new job where I’d need headphones for work. These are pricey. So I debated pulling the trigger. They are worth every penny. The batteries last an exceptionally long time, allowing me to go nearly a week of full time work per charge, with noise cancellation enabled. Sound is good, plenty of bass for music and enough passive noise attenuation for my liking. One feature I like is that they function over USB as an audio interface. I’m bringing this up for a couple of reasons. The first is that they work while being recharged and I’ve been able to use them attached to a USB hub connected to both my laptop and my tablet. The second is that they work as a very low latency device when used this way, making them great for portable music production, relying on the conversion in the headphones which is adequate. Sure it’s not ideal, but if you like having options it’s nice to know these earphone work three ways: wireless, audio cable, & USB. Adaptive / Active noise cancellation is both for the audio and microphone. I’ve been in very noisy environnements with callers unable to tell. There’s also the ability to feed your own voice back through the headphones but in this case there’s a bit of lag and I’ve found myself occasionally distracted by the slight delay. Oh, they’re exceptionally comfortable. My biggest qualm is that they’re a bit prone to creaking and the plastic doesn’t feel like it will last but I could be wrong. Time will tell, though at this price I’d like a slightly higher build quality.
2 people found this helpful
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Sam Kemble
1.0 out of 5 starsVerified Purchase
Unfortunate purchase
Reviewed in Canada on August 5, 2019
I had high hopes for this product. It is glitchy to the point of useless. When using it for handsfree, I turn or nod my head, I unknowingly put my caller on hold. Losing client calls, frustrating customers when I use this headset. When watching movies the sound cycles on...See more
I had high hopes for this product. It is glitchy to the point of useless. When using it for handsfree, I turn or nod my head, I unknowingly put my caller on hold. Losing client calls, frustrating customers when I use this headset. When watching movies the sound cycles on and off. Listening to music working in the yard, I turn my head and the song pauses. These are pretty much useless and a regretful purchase. I can''t believe I spent almost $500 on this device.
2 people found this helpful
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Marie C Turcotte
5.0 out of 5 starsVerified Purchase
Not perfect, but the best for the price
Reviewed in Canada on June 10, 2020
Easy to connect to your devices, easy to use, great sound, they are almost perfect. The only default I found is the need to use the small USB connector for a laptop, even if it''s equipped with bluetooth. My previous laptop only had two connectors and the second one was used...See more
Easy to connect to your devices, easy to use, great sound, they are almost perfect. The only default I found is the need to use the small USB connector for a laptop, even if it''s equipped with bluetooth. My previous laptop only had two connectors and the second one was used for my trackball, so none was left. Beside that, I simply adore these headphones.
One person found this helpful
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Anton R. Tajanlangit
5.0 out of 5 starsVerified Purchase
Lives up to my expectations.
Reviewed in Canada on March 26, 2021
After reading many online reviews and watching several YouTube video reviews, I was impressed by the fact that this particular model had mostly positive comments. So I tried ordering them, and I''m not disappointed. Everything they say about it is true.
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Amazon Customer
3.0 out of 5 starsVerified Purchase
A bit underwhelming for $500.
Reviewed in Canada on July 13, 2020
Very comfortable but so so sound quality and confusing controls. One side cuts out from time to time. Not great sound quality or bass for $500. However people I teleconference with say my sound quality is strong when I speak. Battery lasts a long time. Easily can make an...See more
Very comfortable but so so sound quality and confusing controls. One side cuts out from time to time. Not great sound quality or bass for $500. However people I teleconference with say my sound quality is strong when I speak. Battery lasts a long time. Easily can make an eight hour work day on wireless mode for talking an listening.
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2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

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2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale

2021 Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, popular Wireless, popular Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) outlet sale