After a certain point, at around 3 hours, the plastic part that touches the right side of the skull presses. I consider my head size to be normal to narrow. Its sound and the transmission of my voice are okay. The USB cable is long, which adds comfortable movement.

Perfect, I can hear and be heard without interruptions, it is very lightweight and the quality for the price is excellent

Excellent headphones. They have been used many times in conference calls and have never disappointed me:
1. Excellent acoustics/sound quality
2. Beautiful
3. They don't bother the head. They have an arm that can be opened for a better fit.
4. Very good build quality.
5. It indeed isolates sounds. Verified during conference calls while music was playing in my space, devices were working, etc.

it does not isolate sounds from the environment at all.. on the contrary, everything sounds very loud. Do not buy them.
I add that after 4 months they broke down without reason. Do not go near them

I have been using it daily for several days now. So far, I am satisfied; I can hear the customers and they can hear me without interruptions. I haven't determined if the noise isolation works well. What I would like is the button on the cable that adjusts the volume and completely isolates my situation from others, so I don't put them on hold. It would simply be convenient for me due to the nature of my job.

It is really a very good product. One of the best VMF I have ever bought!! I highly recommend it

Extremely good headphones, very lightweight and with excellent external sound isolation. I should mention the music playing in the room and my conversation partner couldn't hear anything (only my own speech). Value for money!

I use them for my class. I am a teacher.
- The isolation from the environment is excellent. Imagine that during the lesson, I sometimes played music on a small speaker and the students couldn't hear anything. If someone speaks to you from across the room, nothing gets through to the microphone.
- They are very comfortable. I use them for 7-8 hours a day in class. Maybe I change ears once.
- Obviously, we are not talking about listening to music! They are for professional use in conference calls and not for anything else.

Unfortunately, it is only for the left ear and it does not state this anywhere in any description or comment!

The entire desk is designed in such a way that the cable comes from the right, and it does not suit me to listen from the left ear!

I bought them used 2 years ago and until now I have no complaint. I use them daily for phone calls, they are comfortable on the head and lightweight, many times I forget that I am wearing them. I generally do not use them for music, as they only cover one ear, but they produce satisfactory sound. If they break, the most likely thing is that I will buy them again.