1. Optical resolution: 1200DPI
2. Number of keys: 3 keys
3. Working method: photoelectric
4. Interface type: Mini USB
5. Operating distance: 10 meters
6. Working voltage: 1.5V
7. Dimensions: 6 x 11.5 x 3.8 cm
8. Power supply: 1 x AA battery (not included)
9. Channels: 16, automatic frequency modulation
10. System support: compatible with Window 7/XP (64)/Vista/Windows 8
11. Comfortable, non-slip matte grain texture cover
12. Automatic sleep, power saving design
13. Non-slip texture roller design, comfortable hand feeling and free control