Case Logic Mini 2.4GHz Wireless USB Optical Mouse (Black) (EWM-800) 1000-DPI high definition optical sensor is 2.X more responsive than standard optical mice 2.4Ghz USB Micro Receiver Operating range up to 10 meters Uniquely designed with comfort in mind Perfect for travel Symmetrical design; perfect for left and right hand users No pairing required; Plug & Play via USB nano receiver Auto power function, saves and prolongs battery life; ON/OFF switch