DREAMUS&reg; Blue New 2.4G Foldable USB Wireless Cordless Optical Mouse for Laptop Computer Tablet PC Windows95/98/2000/ME/NT/XP/VISTA/7, MAC, LINUX Foldable wireless optical USB mouse brand new and high quality Working distance: 10 metres Interface:USB For Windows95/98/2000/ME/NT/XP/VISTA/7, MAC, LINUX