Heavy. High. The coating is erased, the color of the LEDs is uneven. The left button wears out quickly, starts working in turbo mode. Due to the fact that the mouse has 2 types of memory: internal and software memory, when you start Windows until the program starts, it is not always possible to use the mouse: the buttons may not work or the cursor movement speed drops to zero if you use a password on the computer , this mouse will not start the computer. Buy several pieces at once, because. quickly fail.