State ofartadvanced optical technology Ergonomic design , comfortable control Optimal size to avoid fatigue after long period use .Tranquil design wheel for scrolling four contact points to rescue resistance and enure excellent mobility.
Easy control on most surface .
No mouse ball..
No need to clean the mouse parts.
No need to use mouse pad.
Compatible with microsoft WINDOWS 95/98/2000/me/xp/nt4.0/mac os9 or above High resolution : 400 or 800 dpi USB or PS/2 interface 1.5m cable length.