1. Brand New，High quality.2. Intelligent network functions，plug-and play3. Ergonomically designed， comfort grip.4. With Wireless design，space-saving5. With On/Off power switch.6. Including Scroll Wheel， Page Forward and Page Backward buttons，easy to Internet Surfing7. Ideal laptop companion for home and office use.Specifications: 1.Tracking method: Optical2.Interface: USB 2.03.Mouse Power : 2 �� AAA Batteries (not included)4.System Compatibility: Windows 2000， Me， XP， Vista， Win 7，Win8 and Mac. 5.Size:10.5 x 6.8 x 3.5cm 6.Color:Black Package Included:1 x Wireless USB Optical Mouse1 x USB receiver