3.5 years of very active use (Quake for example), we can say that every day. Prior to this, the sensor worked well even on the bed, but the wire was bent, because. was permanently connected to the USB output in such a way that it was bent 180 degrees. I think that an ordinary mouse would die in two months with me. The wire was annoying, sometimes it interferes with moving the mouse. In general, I am very satisfied, I took it for 550 in an online store (I don’t remember where). Mine is not completely dead, but it does not work as it should. I think to take the same, or wireless with similar characteristics.