Type: Wired Ergonomic Design: Symmetrical Sensor: Optical Resolution: 1000 DPI Buttons No.: 4 Port: USB Cable Length: 150 cm . 5 M Clicks Button Lifetime Extreme quality offer over 5 million clicks guaranteed. Specifications of A4Tech Wired Optical Mouse Model-OP-620D – Black (Original with S/N; Long life buttons) SKU 184876497_PK-1369688506 Connectivity USB Mouse Type Optical Mouse
