Coollife 3D Car Shape 2.4G Wireless Optical Mouse Mice 1600DPI +USB Receiver For Laptop PC Power Supply: 2 x AAA Battery (not included) Mouse type: Wireless Optical Mouse Dimensions (approx.): 10.5 (L) * 5.0 cm (W) System Compatibility: Windows 98 / ME / NT / 2000 / XP / Vista / Win 7 / Linux or Mac OS Button: 2 Buttons + 1 Scroll Wheel