In general, this is already the third A4Tech mouse, and to be honest, not a single mouse has ever failed so quickly before. There were ball Logitech, there were optical Logitech, there were even banal Geniuses and not a single mouse died so quickly . the maximum that died was that the microswitch had to be soldered in the mouse and that was it. But for the sensor to die, like on the A4tech X7-760, or for the wheel to wear out, like on this X7-718Bk, this was not the case. So the mouse is comfortable, but fragile. So I put 4 for the cable and the wheel