I love Sennheiser products. I think they make quality sound-products with smart design. This fits that mold. The magnetic docking is a fantastic feature that makes it very easy dock and undock without needing to focus on it. The build quality is very good. It feels quality, it has a nice heft to it, yet is very comfortable to wear. The microphone is perfect, and everyone hears me well and without issue.

That being said, this is not perfect. The first issue is the quietness of the sound. For speaking with others, this is not bad, but one of the main reasons I got this is for listening to internet media. It is a quick and convenient way to watch a youtube video, or listen to a song or two, even if this isn't what its made for. The problem with this is that it is not very loud. One fix for this is to right click it in the windows sounds menu, go to "properties---enhancements" and check the "loudness equalization" box. This makes it so you can at least properly hear the media, though it still is overly loud.

The second issue with this is keeping the dongle paired. It has a tendency to disconnect from the dongle. Sometimes randomly, sometimes when you redock it and undock it later. When this happens, you have to remove the tiny dongle from your USB port, and reinsert it. It isn't a huge deal, but it is annoying.

I got this wireless Sennheiser to replace a basic USB wired headset. Staying at home for an extended time, I wanted to be able to move around my home office without getting tangled up in a cord while on conference calls with the office.

I purchased the MB PRO 1 UC ML primarily because I wanted the charging stand. The set also comes with a pre-paired bluetooth USB dongle, which I didn't think I would need as my Mac already has bluetooth built in. But it turned out to use the headset with Microsoft Teams, I needed the bluetooth USB dongle to maintain connectivity with Teams when the bluetooth headset is turned off.

When I first got the headset, I was able to pair it up to my Mac's built-in bluetooth. I could even use the headset for M/S Teams. However, as soon as I turned off the headset and then later on tried to connect it, the headset no longer showed up on M/S Teams. It was connected to the Mac's bluetooth, but not Teams. It seemed the only way to get the connection going on Teams again was to use Bluetooth Preferences to disconnect then reconnect to the headset, then go into M/S Teams and reselect the headset as in the input device. Not convenient.

I was almost going to send the headset back, but decided to try connecting to the supplied bluetooth USB dongle. it's a bit weird having built-in bluetooth and the bluetooth in the USB dongle, but it worked. I was able to pair the Sennheiser headset to the Sennheiser USB dongle plugged into the back of the Mac.

What is interesting is M/S Teams sees the Sennheiser USB dongle as an available USB input device labeled "Sennheiser BTD 800 USB for Lync". Even better is M/S Teams "remembers" this connection even when the actual Headset is turned off, such as when it is in the charging stand. So now I have wireless convenience with what looks like a USB wired connection to M/S Teams (Lync).

Lets clear up some misunderstandings this is the MB pro 1, Its just the headset and contact pin Charger (not the MB pro 1 UC which includes 2 other Accessories not really worth the price tho)
For those of you who don't know Sennheiser is well known for sound quality products this Headset was my 2nd Sennheiser purchase my First purchase were Urbanite XL Wireless headphones.

Im a Truck Driver who was not satisfied with blue parrot headset
at $140 USD, its a great Deal, I would recommend this strongly for anyone using it for business

Clear sound on both ends, sound Test with both windows sound recorder and Skype mb pro 1's mic was much more superior than the Blue Parrot BX250-XT headset, the mic for mb pro 1 does not need to be right on your lip to be heard loud and clear, unlike some other options.

plastic construction, you can wear the headset on either ear very comfortable you forget you are wearing it well balanced on you head as the battery is on the other side, the foam pad on your ear dampens sound quite effectively for when you are on a call, volume slider on the bottom, button with tactile feedback, has voice for power on/off in the on position press once to check the battery, or answer incoming call, press twice to redial.

The charger first impression is that it needs a proprietary charger, however thank sennheiser's brilliance underneath the foam padding there is the Common micro usb connector, easy to remove, a plastic washer like ring snaps off and back on after charging

this Bluetooth headset can connect to 2 devices at the same time if you are using it on your computer with skype (USB Dongle or capable computer required) and you get a call press the button and it answers and switches to your phone, hang up switches right back to skype, This headset is a class 2 device (rating is 10 meters away from your connected Device however not necessarily clear sound at furthest distances)

For more Research here is the product page from sennheiser
http://en-us.sennheiser.com/mb-pro-1-and-mb-pro-2

My son recommended this unit because his IT team were all users. I tried it because as many of us do, I wanted to grow up to be like him. .... Well anyway. I like this Sennheiser and was an easy sell because I've used their world class microphones in my studio and live shows for years. Sure it's a teeny bit pricey, but it's better than anything else in that price range. You can wear it one side of your head for a while. Then if your brain burns out on that side, you can flip the mic wand around and switch to the other ear. I guess they could be a little more comfortable than that little plastic clamp on the side of your head for a few hours. My biggest gripe may not even be their fault. When I'm in my car, the Bluetooth baby seems to like working on my call right up to it ringing at the other end ..... and SWITCHING to the car speaker when they pick up. I HATE THAT. Fix it.

A nice lightweight wireless headset, but a couple things nag at me.

In general it's a nice headset for people looking for something lightweight. I imagine this would appeal to people using skype or other teleconferencing programs frequently and want space to move around and not worry about wires. The battery life is quite long. I'm using it primarily for voice chat in discord while gaming and it also works great for that if you're like me and want game sound from your speakers and voice only in the earpiece. Sound quality is good for voice.

The stand that comes included is nice and decently weighty, and the headset attaches via magnet. It holds in place very well.

My only issues come from the earpiece volume being a little too soft (probably helps helps battery life) for my preference. It's not terrible, but I did wish it went just a couple volume ticks higher. When I have my A/C running in the room it could use that extra bump of volume.

The other little nag is the USB port usage. It would have been nice, since the base has a USB connection for charging, to see a pass through USB port on the stand for the bluetooth adapter. USB ports are at a premium on my PC, and I'm having to occupy two of them, one to provide power to the stand, and another for the bluetooth radio. Plugging into a spare wall outlet to USB charger is an option, so it isn't a dealbreaker by any stretch, but having a USB pass through in the stand would have been a nice touch.