Great mouse for long fingers. Comfortable, looks stylish and unusual, sharp corners do not interfere at all. The autonomy is good, but it still depends on the backlight, its intensity, brightness, etc. If you have a rug of the same prism cloth company, then you can adjust the backlight synchronously with the mouse. I have a carpet of a different company, but I saw this chip from a friend, it looks really cool. It runs well on any surface, I tried it on both matte and glossy carpets.