Specification :

1.usb optical wired technology
2.High resolution: 800dpi
3.Convenient to carry
4.3 buttons with scrolling wheel
5.Never need cleaning
6.Color: Purple, blue, red , customized
7.Packing: white box, blister, color box
8.SIZE: 91* 45* 31CM
9.System Requirement:
Windows98 Windows98se Windows2000
WindowsXP WindowsME Vista