Dual connectivity with both Bluetooth and 2.4GHz wireless technology. Rechargeable via micro cable Ergonomic design for comfortable use for long periods of time. Built-in optical sensor for precise tracking on different surfaces. Mini Nano receiver inside the mouse for easy portability. On/off switch to extend battery life. Auto-off function to save energy. Supports up to 10 meters operating distance. Durable design with over 5 million clicks key life.