– OPTICAL TRACKING METHOD, – USB INTERFACE, – BUTTONS 3 BUTTONS (RIGHT AND LEFT MOUSE BUTTON, SCROLL WHEEL AND MIDDLE BUTTON), – RESOLUTION 1000 PPP, – CHANGE CYCLE LIFE 3 MILLION CYCLES, – DIMENSIONS 4.7 X 2.5 X 1.5 ? (119 X 64 X 37 MM), – NET WEIGHT 0.18 LB. (83G), – CABLE LENGTH 6 FT (1.8 M), – IP67 WATERPROOF RATING