Lenovo Full-Size Professional Bluetooth Rechargeable Programmable Keys at 4000 DPI Gray Mouse: Color Storm grey Battery Life: Up to three months on a single charge; usage may affect this. Type/Length of Cable Charging from USB-A to USB-C 50 cm (19.7 inch) long cable Weight (mouse only): 96 g/3.4 oz The left and right keyboard buttons have a 3 million button life. Blue Optical Mouse Sensor Hardware Requirements Computer