Mini Wireless Mice Optical Mouse For PC Laptop Red Blue Black White Grey Yellow New Color available: Red Blue Black White Grey Yellow (Pls message us the color you like,if not,we would send it at random) 2.4GHz free moving in 10 meters (in open space),EEPROM saves your ID forever, No need to re-search ID When changing battery or being power off. ,Energy-saving technology: 3 hibernation control+ power off automatically + power off artificially. Low Power Consumption1.5V/22-23mA,It falls to 2mA after stopping for 1 second and then gradually falls to 0.03mA. ,Cordless carrier frequency: 2402MHz-2480MHz 16 wireless working channels, automatic frequency jumping ,Rated working voltage: 1.5V,Rated working current: 23mA Mouse system: optical ,Speed: 14 inch/ second Resolution: 800CPI/1600CPI ,Size: 85mmX59mmX32mm ,Power supply:1*AAA battery( not included)