10M 2.4G Wireless Optical USB Mouse for Laptop PC (Green, BLUE, gray ... at distance of up to 10 meters (33FT) -Precise Optical Technology, movement can be detected in near all service- ... .5 x 3.5 cm-Compatible with Windows 98, ME, 2000, XP, VISTA, Windows 7 -Qualified with CE, FCC safety ... blue, gary,black,red available 10M 2.4G Wireless Optical USB Mouse for Laptop PC (Green, BLUE, gray available)