Silent Multi-mode Wireless Optical Mouse • Connect via Bluetooth 4.0, 5.0 and 2.4GHz • Ergonomic and symmetrical design for right hand • Intelligently switch between 2 devices • PAW 3320 optical sensor: precision on nearly every surface • 5 levels 800-2400 DPI adjustable sensor, switch with one click • Silent click • Rechargeable 500mAh lithium battery • Up to 230 hours battery life with full charge