After 3 months of use, I have the following:

Pros:
- Very lightweight and comfortable.
- Plug & Play without searching for drivers on Windows 10.
- The battery lasts quite a while.

Cons:
- You have to get used to the sound. It sounds a bit "muffled." It's not bad, but if you're coming from other headphones, it's not the best either.
- The microphone is good, but it picks up sounds from the TV (even if it's far away) and from typing.
- The cable that comes with it is quite short, so if you run out of battery and need to charge and use it at the same time, you can't unless you have a USB dock nearby.

Overall:
For the price of €54 at which they were purchased, I can't say I'm particularly excited about the performance, except for the weight and comfort.
Compared to the Zeroground HD-2400G Keiji I had before, the sound is much inferior, as is the microphone.

Bad choice and I do not recommend them for the following reasons. The bass but mainly the volume are at very low levels and especially in Bluetooth mode it is extremely low. Also, it is not recognized by Logitech's g hub application and there is no possibility to customize the sound or check the battery. They also have a tight headband and on large heads they will become uncomfortable after a while. The microphone performs moderately and the overall sound is satisfactory in the highs except for the very low volume I mentioned. Finally, among the few positives are the good battery life, their range, and the fact that they are plug and play. At this price, they are not recommended at all

I just received the product and tried it. Easy connection with bluetooth, very comfortable and lightweight with soft cushions. It provides a decent amount of external noise isolation. I deduct one star because I would have liked it to offer a bit more volume. However, for some people, continuous high volume might be tiring

On the positive side: It meets all my pre-purchase requirements, which were:
a) A set of headphones without leatherette on the speakers
b) Relatively cheap (under 60 euros)
c) Easily accessible mute button
d) Wireless
On the negative side: I was disappointed by the sound quality as it did not impress me at all for Logitech. Coming from the Zeroground Hatano, which costs 30 euros, the sound quality difference is CHAOTIC. The bass is not at all of good quality, and I mean not that they lack intensity, but depth. You will also notice when playing games that the effect sounds are not clear; the sound is comparable to cheap earbuds. My expectations were shattered as I was expecting A-grade quality from Logitech.

Very good sound quality and the battery lasts quite a long time. I would prefer a slightly louder sound but it is at a satisfactory level.

So, don't listen to anyone, just me hahaha, the headphones, the only thing they're really missing, and that's why 4 stars and not 5, is that they needed a bit more volume and they have unacceptable noise canceling, maybe because the headphones are made of fabric! Those of you complaining about the bass are clueless because these are gaming headphones, not for music. The bass frequency is VERY good and crystal clear in any game I tried them with, it's just that many of you want more gain in the sound, which is indeed missing, and you interpret it as lacking bass. The lighting USB it has and this technology in general, brings the latency down to almost 0, the response is amazing, the microphone is very good, without interference and with clear sound, honest as well!!! So, buy the headphones without fear, just for gaming!!!

I am thrilled. The sound is good and the connections from the phone or the laptop work perfectly.