First of all, what a friend wrote below is not true, meaning it does not have 4 levels, it has 3 (low, medium, high), and the 4th "level" is simply the sleep mode, which is actually at exactly the same noise level as low, it just turns off the device's lights. Aesthetically, the device is beautiful, but it is a big disappointment that it does not have an air quality meter like the previous Xiaomi one I had, which broke. So, you can only feel how clean the air is because there is no way to see it in the app. Of the levels, only the low one is almost silent, the medium is at tolerable levels, and with the high one, it's better not to be in the same room when you use it. In general, the device does its job even on low and has a pretty good price (under 40 euros). As for durability, time will tell. In conclusion, a very basic air purifier that does the job for a room.

poor build quality the first piece that came to me broke after 10 hours of operation in total, it made a sound like a helicopter they replaced it for me and the new one arrived when I opened the packaging and from inside where it blows air small pieces of plastic fell out, so very poor build quality.

On the first two settings, it's silent.. on the third, it's bearable noise, and on the last setting, it's a bit noisy.. I use it in the bedroom, and it's just right for such spaces... pros are the lighting it has and the color changing.. cons are that it doesn't have an indicator for air quality