1)Optical:PSII/USB/Combo
2) 1200dpi
3) Compatible with Windows95/98/2000/XP/NT
4)Ergonomic engineering designing, suitable for either right-handed or left-handed person.

Packing information:
Meas: 50*48.5*27.5 G.W./N.W.: 13.5/12.5KGS QYT: 100PCS/CTN