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* High-precision optical trackball
* Never needs cleaning
* LED roller shines the status of trackball movements
* Supports Windows XP/Me/2000/98 and Mac OS
* With the optical technology,the motion canbe detected on most surfaces,including wood plastic,paint,etc.
Spectifications
* Resolution:400dpi / 800dpi
* Switch life:million times
* Cable Length(M)£º1.2/1.4/1.5/1.6/1.8/2.0
* Working current:40mA
* Holding current: 30mA
* Sleep current:10mA
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