Expand Size: 110 * 58 * 34mmSize folded: 82 * 58 * 34mmThe receiver body size: 20 * 15 * 6mmPacking: 1 pc Mouse features:1. three-button design: left， right， wheel 3 button design2. Smart power: 4-speed automatic sleep function， intelligent power， extend battery life3. 2.4G transmission: 2.4G bidirectional transmission， active frequency hopping anti-interference， ultra-long effective operating distance4. Smart Connection: replace the battery， the receiver transmitter need to code5. Support: Windows98se/ WindowsME/ Windows2000/WindowsXP/ Windows2003/ Mac Technical parameters:1. Mouse rated working voltage; 3V2. The mouse rated operating current; 10mA3. Mouse Resolution: 800-1200DPI4. Wireless Working Channel; 16， automatic frequency hopping5. Wireless operating frequency; 2.402-2.480GHz6. The maximum effective distance: 10 meters