3D mini optical mouse for USB or PS/2 .3D mini optical mouse for USB or PS/2Elf Optical Mouse.3 buttons.800dpi.Super mini size:74.6*46.3*29.5mm.With 3 LED light on surface: green, red, blue.Very shiney surface.Silicon rubber on both sides.Ultra-soft and thin calbe, only 2.00mm thick.More colors available, black,silver,blue,green,pink,white 3D mini optical mouse for USB or PS/2