Overall, it is a mediocre product. The sound often gets stuck and you need to unplug and plug in the USB dongle again. For example, while watching a movie or listening to music, the sound suddenly becomes robotic for 5-6 seconds and you hear loud noise. Other times, you hear loud clicks every second. This probably means that something is wrong with the signal transmission, which is not justified at a distance of one meter from the dongle.
Unfortunately, it does not have its own software, nor does it recognize the Razer Central software.
It only comes with software for surround sound, which you need to activate by entering the product's S/N. I never used it because I use the free Steelseries Sonar, which has surround sound and everything else you need.
The microphone's audio quality is average. It's not too bad.
The battery easily lasts for 12 hours of intense sound (I am generally deaf, so I usually have it on full volume).

3 stars because it is quite cheap for a wireless headset and as a construction, it is quite durable, comfortable, and lightweight. It nicely fits the ears and you don't feel any pain after prolonged use (9+ hours).

If it didn't have the sound issues and could be managed through its own software or at least through Razer Central, it would be amazing.

I have had them for less than 2 years, since August of 22, and nothing has annoyed me so much. I also have a microphone from the same company and while everything was fine at first, over time they all started having issues. At first, the headset microphone wouldn't pick up sound, if I shouted into it, others would hear a whisper. Then it started giving me problems with the separate microphone, like when one device was connected, it wouldn't recognize the other device (the microphone), and then one day it just fixed itself, but the headset microphone is now terrible (I can't be heard well at all). In the end, they fell on a pile of clothes shortly after, and despite that, they broke a little, which means I can no longer replace them. Take them at your own risk.

Edit: I should also mention that for a long time now, the low battery notification has been broken and it can beep all day, regardless of how many hours I charge them. (They don't turn off for many hours even if I have them wireless, but I constantly hear beep beep.)

They have the classic Razer sound, similar to the Blackshark. The battery life is excellent, lasting several days (depending on usage, of course). It's very convenient that they charge with type C, as I have a cable at my desk that comes from my phone charger, so I can charge both my headphones and my phone that way.

Sometimes they do something weird, but it's not a big deal, and I find it understandable since they're wireless.

The microphone is bad. Low volume and quality, but enough for Discord and at least my voice sounds normal without any weirdness. The good thing is that if you ever need better quality for some reason, if you connect them with the 3.5mm jack cable (which is included in the box), the microphone quality improves.

Very comfortable in the ears, similar to the Blackshark, but of course, this is subjective and depends on each person. I know someone who didn't like them at all (the Blackshark, which have the same shape). From what I understand, they fit better for those with smaller ears. They're also lightweight and don't cause any discomfort.

If you want something wireless, they're definitely a great choice. If you're interested in sound quality, DO NOT get gaming headphones, get regular wired headphones (like Audio-Technica). Personally, I preferred them over regular Bluetooth headphones because I trust the 2.4GHz dongle more.

I rate it based on its price, which I believe should be around 50-60 €. It is very comfortable and lightweight. It has plenty of connection options. The quality for this category is average in terms of plastics. The ear cushions are fine. The microphone is very good without distortion for the user who is listening. The sound, which is the important part, is generally satisfactory for both music and gaming. You need to make some adjustments to make it fit your preferences because we all have different tastes, and what one person likes, another may not. For me, it didn't have strong bass as I would like. When you install a program and adjust it, it sounds much better. I also used them with the 7.1 that I downloaded from Razer after registering the product and receiving the activation code. I can say that it makes a difference in games, but it depends on the game you play, as music and effects play a role in giving you a better feeling when you activate it. They are not tiring, and their battery lasts long enough. It is a good first solution up to this price point, while you can find other alternatives at similar levels. Now, if you want something better that you can keep and enjoy more, you will pay twice the price and have plenty of options to get something at a higher level.

Well, the headphones have very good sound for 100 euros, the microphone is perhaps the best for Razer, and on Discord it's crystal clear. The build quality is plastic, but not the cheap Chinese plastic, it's sturdy and has a metal arm inside. They're the most worth 55 euros I've ever spent (they normally cost 100, but I got them on Black Friday), but even if they cost 100, I'd still buy them.

23/01
All of the above still applies. Maybe it was a bit of an exaggeration to say I'd buy them if they cost 100, but they've still proven to be great. The only problem I have, as with most Xiaomi products it seems they've adopted (hopefully temporarily) and Razer is this stupid Matt plastic that even scratches if it comes into contact with air. Also, the Bluetooth dongle is shaped in a way that covers the surrounding ports, so you have to constantly use the USB adapter that comes with it. This means they knew they made a design mistake and instead of fixing it, they added something inside so there wouldn't be any complaints. But I still believe it should have been the classic USB style but with a Type-C style, and then there wouldn't be any problems

Update, 3 months later
The microphone stopped working. Or rather, more specifically, the contact broke. The microphone works fine on its own if connected to other headphones, but the opposite is not true. I sent it for "inspection" and the store determined that it is fine. I am sending it back again and we will see what happens...

They are really good. I was looking for headphones of good quality, not too expensive, and especially wireless and comfortable. I work remotely and with the headphones provided by work, I kept tangling the cable in various places. It was short and I couldn't move freely, feeling like a dog tied to a leash all day. I was fed up.

I simply plugged the dongle into my computer and that was it, no settings or anything, luckily for me because my computer doesn't allow me to install anything, everything is locked. Now I can stretch like a human and take five steps around.

They are well-built and although they felt a bit heavy when I opened them, they turned out to be super comfortable. I wear them for 8-9 hours a day at work, so comfort is important to me.

They come with a jack cable, the dongle is USB-C, but there is also a cable with the classic USB that allows you to connect it to a PC if you don't have a suitable port, and finally a USB-C cable for charging. So, the dongle and three cables. I was impressed.

I have connected them to my mobile phone as well, always wirelessly, and I was impressed by the range. I have never used them with a cable.

They isolate external noise well, both for me wearing them and for the person listening to me. Overall, they are great.

The sound quality is very satisfactory, as well as the volume, but nothing extraordinary. I can hear my conversation partner clearly as well as the music.

I have two negatives to mention, but they are only from my personal use and not necessarily general. Firstly, the microphone is average and doesn't fully satisfy me. I have to stick it close to my mouth to sound clear. However, I must note that I work with a Mac (for work) and I use a special pre-installed application for calls, and I have to admit that there were issues with their own headphones as well. When I talk on my mobile phone, there is no problem, so it's possible that the headphones are not to blame but rather their software.

The second negative is that they automatically turn off after a while when not in use. This is not a problem per se because with "normal" use, it's actually positive to save battery if you forget to turn them off. However, personally, it creates a problem for me because I can go for quite some time without receiving a call (30-40 minutes) and when I need to speak, they have turned off. The good thing is that they make a (subtle) sound when turning off and on, so if I'm not too distracted, I can hear it and turn them on again. At first, it was an issue, but now that I'm used to it, it's probably okay.

The battery lasts as long as I need it, but I haven't tried to completely drain it to see how long it lasts.

As a general conclusion, I am quite satisfied with these headphones and I recommend them.