... frequency, automatic connection-Batteries: AAA X 2 (NOT included) -Dimensions: 9.5 x 6.5 x 3.5 cm-Compatible with Windows 98, ME ... , 2000, XP, VISTA, Windows 7 -Qualified with CE, FCC safety test Package Contents1 x Wireless ... : 13mA Color: green, blue, gary,black,red available 10M 2.4G Wireless Optical USB Mouse for Laptop PC (Green, BLUE, gray available ...