For their price, they are expensive considering that the noises from the environment can be heard. They are lightweight and comfortable to wear for many hours, but they do not isolate the sounds. Very expensive for what they offer.

I have used them both for work and in my personal space mainly for gaming. Let's see some positives and negatives.

Positives:
Headphones: The Jabra headphones have very good sound quality, not at an amazing level but they are quite satisfactory. Personally, I really like the intensity and how clear the sound is.

Microphone:
What they offer to an incredible extent is complete isolation from ambient sounds. Let me show you to understand, because I use a mechanical keyboard and it makes noise, in the past, those I was talking to could hear the noise when I was typing, but now that is no longer the case. Also, many have mentioned that they can hear me perfectly, very clearly, and most importantly... Others only hear your voice. Someone enters the room, they speak loudly on the other side, and... nothing. The microphone completely isolates breaths, voices, and sound interventions.

Build quality:
The build quality of the headphones is made of reinforced plastic, they are very lightweight, the foam that touches the ears is soft and it relaxes my ear. From what I have researched, it is hypoallergenic and even after hours of use, I feel like I'm not wearing them. They are truly comfortable.

Negatives:
Unfortunately, their price is prohibitive, although lately their value has dropped below 80€. Hopefully, we will see them at a lower value.

In summary, they are a great choice for those who want a comfortable solution for work or gaming and most importantly... Complete isolation from external sounds. Happy shopping.