Tonsee 2.4G 1600DPI Optical Mini Wireless Mouse Mice For Laptop PC, Pink Size:Approx 100x60x35 mm (L x W x H) Compatible with Windows XP, Vista, Windows 7, ME,2000 and Mac OS...or latest Ideal for laptop & PC users for Home and Business USB 2.0, also compatible with USB 1.1 High resolution: 1600DPI