Fantech W603 Go Wireless Optical Tracking Technology 2.4GHZ Wireless Mouse 1600 DPI / 3 Buttons Office Mouse With Smooth Cursor Control FROM EXPERT ZONE -BLACK COLOUR- EXPERT FEATURES FROM EXPERT ZONE Sensor Technology - Optical Sensor Resolution - 1600 dpi Battery Life - 3 months Battery Type - 1AA Buttons - 3 Wireless Distance - Max 10 Meters Wireless System - 2.4GHz Connection Type - Wireless (USB Receiver) Optical tracking technology - Accurate tracking through the next generation of optical technology, which allows you to enjoy a smooth cursor control experience. Plug and Play Micro Receiver - The low profile micro USB receiver allows for stable connectivity without messy cables, and easily stores in the mouse when not in use. Comfortable Curves For Your Hand - Designed from years of experience, GO W603 features a truly ambidextrous shape, allowing users to use it for hours without discomfort and in both hands! Up To 3 Months Of Battery Life - Focus on your work without distractions.