wireless 2.4 Ghz technology ergonomic design, comfortable hand touch, easy operation built in sensitive optical sensor mini nano receiver is slot in side mouse on/off power switch to extend battery life automatic off function to save battery energy up to 10 meters operation distance key switch life more than million times low power consumption 1200Dpi, precise and prompt, work freely supports windows XP/ME/NT/Vista/10 and Mac or higher version 1*AA battery