1) Resolution: 800 DPI
2) Frequency: 27MHz or 2.4GHz optional
3) 256 ID codes to enable multi users at the same time, same place with no interference
4) USB type receiver that can be enclosed in the mouse while not in use
5) 5 keys
6) Auto sleep function to save the battery power
7) Separate power on / off switch for battery power saving
8) Low stand by current
9) Zoom in / zoom out function
10) Working distance: 1 - 1.5m radius
11) Various color available
12) Working on any surface except glass
13) Switch life: over 1 million times
14) Battery operated: by 2pcs AAA batteries
15) Compatible: Windows 98 / 2000 / ME / XP / NT 4.0