If you intend to buy a new mouse as a replacement for the damaged one， thisG8 Lase Engine 4 Gears Shift USB2.0 Optical Mouse Black may be your best selection.The optical technology adoption guarantees the accurate response and ultra-smooth tracking. With 4 gears design， it allows you to freely change the speed to get better performance. Itis designed into compact size and light weight for comfortable and long time use. What is more， based on ergonomic and humanized principle， this mouse fits for hand well and you can operate effortlessly and comfortably. Just come on!                                    Features             Anti-skid and durable to use<br> Ergonomic design makes it comfortable to manipulate <br> Feature soft grips and contoured sides， extremely comfortable<br> Support instant CPI shift technology<br> Compact， lightweight size， easy to carry<br> Design with USB port<br> High resolution， high sensitivity and high precision <br>                                                            Specifications             Material     PC    <br> Weight     8.36oz / 237g    <br> Color     Black    <br> Dimensions     (64.96 x 2.36 x 1.57)" / (165 x 6 x 4)cm (L x W x H)    <br> USB     USB2.0    <br> DPI     800 / 1200     1 x Optical Mouse     <br>