Sport car shape andunique headlight design, looks so stylish and attractive. Ergonomic design through exquisite workmanship, comfortable to grip. Wireless transmission,operation distance is up to 10 meters, so convenient to use in daily life. Suitable for work, school, home, or as a gift for friends. Item Name: Wireless Mouse Tracking Method: Optical Interface: USB 2.0 Resolution: 1600 DPI Button: 2 Buttons + 1 Scroll Wheel Switch Life: 5 Million Cycles Automatic Power-Saving Sleeping Function: Yes Effective Range: 2.4GHz Wireless Transmission, Operating Distance up to10 Meters System Compatibility: for Windows 98/ME/NT/2000/XP/Vista/Win 7/Linux or Mac OS Power Supply: 2 x AAA Battery (Not Included) Features: Fashionable, Car Shape, Wireless Connection Size: 112mm x 53mm x 36mm/4.41& 39;& 39; x 2.09& 39;& 39; x 1.42& 39;& 39; (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Mouse 1 x 2.4GHz USB Receiver (Others Not Included)