6 Colors available: Black， Pink， Green， Orange， Red， Silver Note: The color yellow is actually orange .Wireless USB Optical MouseTracking method: OpticalIntelligent network functionsDimensions (approx.): 110mm x 55mm x 35mmInterface: USB 2.0Resolution: 1200CPI/1800CPIRated working Voltage:3.0VRated working Current: 25mAButton: 2 Buttons + 1 Scroll WheelSystem Compatibility: Windows 98 / ME / NT / 2000 / XP / Vista / Win 7 / Linux or Mac OSAutomatically Power-Saving sleeping functionSpecifications:1. Power Supply: 2 x AAA Battery (not included)2. Mouse type: Wireless Optical Mouse3. Interface: USB4. Button: 2 Buttons + 1 Scroll WheelPackage Content:1 x 2.4G Wireless Car Mouse1 x USB Receiver (Built inside)