Features:1.Using NANO receivers， 2.4GHz wireless technology， wireless transmission distance of 10 meters2.Ergonomic ， Comfortably and easily operation3.Waterproof4.Ideal Gaming Companion with Strong multimedia function Specifications:Windows 98/XP/Win 7/Win 8，etc.Optical Resolution: 1000/1600DPIAnd Computer Connection: Wireless Keyboards Interface: PS / USB Key Life:>1000W timesSway Test:>3000W timesKeyboard Dimension:480(L)*188(W)mmMouse Dimension:123(L)*75(W)mm Package list:1 * Keyboard1* mouse1 * User manual (English)