A4Tech X6-90D USB+PS/2 Optical Ambidextrous Black,Silver mice

Glaser Mouse X6-90D Glaser Engine
-Strongest surface adoptability.
-Works on 99% surface:including transparent glass and shining tile.
-Works even better than normal Laser engine.(patent pending).

Why GLASER is greater than common laser mouse?
Because GLASER has the solution to resolve the problem with most of the laser mouse - fails to operate smoothly on shining and glassy surfaces. The innovative Dual Focus Lens on GLASER is designed to not only work both normal and shining surfaces, but also on the transparent glasses. Dual Focus Technology has combined the present laser and optical engine and provides the best tracking performance to date. Furthermore, the light from GLASER Mouse is proven to be harmless to eyes.