1) Resolution: 800dpi, 27MHz radio frequency
2) Button life: over 1,000,000 times
3) Operating range 1.5 meters in normal environment
4) Deluxe ergonomics design to comfortable hand touch
5) Fit for your left hand and right hand
6) Various colors available
7) Working on any surface except glass
8) System requirement: IBM / PC windows 9X / 2000 / ME / XP / NT4.0
9) Auto smart sleep and wake-up function, lower working current
10)Mini USB receiver, plug &play function