1. Mouse size 90 x 70 x 40 mm 2. Resolution 800DPI 3. 5 buttons 4. 1 channel 256 ID 5. Working distance 1.5m 6. Mini USB receiver 7. 2xAAA batteries 8. Freely zooming in/out functions 9. Fit for your left/right hand, or long-time working 10. Be able to work on any surface including glass 11. Smooth design for comfortable touch 12. Up to 6.4 million pixels/second 13. Running 8 times faster than normal mouse. 14. Buttons life Over 3, 000, 000 times 15. Compatibility Win95/98/2000/ME/XP