Goldensunsky 1000/1600/2000dpi High Speed Wireless Gaming Optical Mouse with USB Mini Receiver, Plug and Play 2.4ghz 2.4G is within ISM timely hopping requirement, successfully avoid the interference problem between different wireless equipments 2.4G wireless transmission can reach 10m barrier-free distance. Mouse uses 1000/1600/2000 DPI switch Pass GOLDENSUNSKY high quality test standard. Buyer beware of other imitate product that was not sold by Goldensunsky. Multiple auto dormancy function, mouse & keyboard can go into deep dormancy when unplug receiver or shutdown, save battery Intelligent connect between mouse and keyboard, plug and play, no need to match code