1) Color: All kinds of injection or rubber coated colors available
2) 3 Buttons
3) 800DPI optical sensor technology for precise movement
4) USB, PS/2 and U+P Combo ports available
5) Key-Press Life: Over 1, 000, 000 times
6) Can work on any surface except glass
7) Compatible with Windows95/98/NT/ME/2000/XP/Vista
8) Fit for your left hand and right hand
9) Packaging: Blister, color box or white box
2) 3 Buttons
3) 800DPI optical sensor technology for precise movement
4) USB, PS/2 and U+P Combo ports available
5) Key-Press Life: Over 1, 000, 000 times
6) Can work on any surface except glass
7) Compatible with Windows95/98/NT/ME/2000/XP/Vista
8) Fit for your left hand and right hand
9) Packaging: Blister, color box or white box