I have the keyboard use only for 3 days in, but am now fully convinced from the outside and also from the function. You can leave the keyboard in red, green or yellow light, or simply aabschalten the complete lighting. Also you can make the light weaker or let it switch automatically. Tastandruck is very pleasant and not particularly loud, would say mediocre in terms of volume. The keyboard is very stable and does not slip, which I like very much, I would buy again at any time.