While in terms of build quality and sound it is exactly what you would expect from Corsair, firstly the dongle is not included in the package, secondly they become tiring after hours of gaming, and thirdly, as another user mentioned below, there is an issue with the cable connection to the headphones, which forces you to constantly plug and unplug to regain connection, something that will obviously damage both the cable and the port. Finally, after almost 2 years, it starts producing deafening "snow" noises, which are likely due to the cable contact. In general, there are better options at the same price.

I have had them for 14 months and I wouldn't change them for anything, I accidentally received two sets of headphones as a gift, these and the Razer Nari Essentials, I use them with PlayStation 4, the Nari ones are now forgotten on the shelf.

I have had these headphones for 6 months. The sound is good and it generally isolates the surrounding noise moderately. What made me consider them a waste of money is the microphone. Specifically, I don't sound loud to others, even if I have the microphone on my teeth. The fact that the microphone is detachable simply makes it a useless feature. But the last straw is that the cable does not make good contact with the headphone port (microUSB) while I'm using them, and it keeps connecting and disconnecting with the annoying sound of Windows. Really far from these headphones.

Speaking always about Gaming, sound quality is very serious and they have sufficient intensity even at 60-70% for single-player games. When they reach 100% for competitive and activate the FPS setting, you can hear everything without the gunshots being annoying to the point of "breaking your eardrums". Corsair's software (iCue) has many operational issues and reaches the level of Logitech's decline. The only solution was to adjust the sound once as I wanted it and then not deal with the software again. Some prefer Stereo Mode, some prefer Surround. Personally, I found Stereo to be more precise than Surround in Competitive FPS and Surround to be more impressive in music/single-player games. I don't use the microphone (removable) because I have a separate high-quality one, but when I tried it, it was just one of the many "in the series" compared to the quality one I have. However, the noise cancellation worked correctly with Corsair's Red MX Cherry switches and didn't let key sounds "pass through".

Guys, I had the Corsair void for several years and after a lot of use, the microphone broke. I decided to finally get the hs70 after doing some market research and I am very satisfied.
There has been an issue for many years with Corsair drivers, which in my opinion are unacceptable. I had a problem with both the void and now with the hs70 when the icue is installed, it causes a hissing sound in the headset, which is very annoying at high volumes.

If you are experiencing the same problem, simply uninstall the drivers. You will lose some cool features, but you will be spared from this annoying "hissing" sound.

Other than that, the headphones are E X C E L L E N T. I highly recommend them. The microphone, like in many headsets, is just decent. It is slightly worse than the void's, but it is satisfactory for gaming.

Usually I put them on and take them off every 3 hours or so, so I can't judge their comfort after 8+ hours, although the few times I used them for that long I had some discomfort. The distance you can walk without losing connection is about 10 meters.

The reason I bought them is that they were the cheapest with this set of features and characteristics. They are wireless, have a detachable microphone, a mute/unmute button, volume control, their own receiver, good sound, good build quality, they are from a well-known brand (for some people this is important) and they are also simple in appearance.

I have had the headphones for about 6 months.
Positives:
- They isolate the surrounding sound.
- They have a detachable microphone.
- They have a microphone mute button and a volume wheel.
- They have a high-quality microphone.
- They have audio indicators for whether the microphone is closed or open.
- The battery is not the best, but considering that someone also uses the microphone, it is logical. Approximately 3-4 days of 3-4 hours per day.

Negatives:
- After prolonged use, the ears hurt because the ear does not "sink" into the headphone but rests on the surrounding monotonic. This is their biggest disadvantage, I believe.
- In the summer, because the cover of the headphones is made of leather, your ears sweat.
- The audio indicators I mentioned in the positives have a downside. When the headphones have 15% battery or less, you hear an indicative beep that for some reason you cannot disable from the corsair software. I hope for an update.
- They do not charge to 100%, but even if they do, because they do not have a meter, the software takes over and personally, it shows me up to 94%.

Conclusion: We are talking about headphones worth 100€, so the sound is of good quality. However, the fact that they are not comfortable, and the fact that when the battery drops, the beep annoys you, are reasons to reconsider if you buy them. There are many wireless headphones similar to these, so search accordingly. They are not Bluetooth but with a dongle.

Edit: In general, if you have large ears, the headphones may rest on them and bother you, as they do to me. After prolonged use, you experience excruciating pain.

After 1 year of use, the earpieces of the headphones "play", and the leather for our ears has started to come off in some areas. After 3-4 hours, they become very tiring. The left earpiece has not been working well for 5-6 months and there is a distorted sound