Lenovo Professional Bluetooth Rechargeable Full Size 4000 DPI Programmable Keys Mouse - Gray: ColorStorm greyBattery LifeUp to 3 months in single charge (may vary based on usage)Cable Length/TypeUSB-A to USB-C Charging Cable, length 50 cm (19.7 inches)Weight96 g / 3.4 oz (mouse only)Keyboard Buttons6Button Life3 million (left / right button)Mouse SensorBlue OpticalHardware RequirementsComput