Advanced Wireless Illuminated Keyboard Dimensions MX Keys S Keyboard Height: 131.63 mm Width: 430.2 mm Depth: 20.5 mm Weight: 810 g Logi Bolt USB Receiver Height: 18.4 mm Width: 14.4 mm Depth: 6.6 mm Weight: 2 g Technical Specifications MX Keys S Rechargeable Li – Po (1500 mAh) battery Full charge lasts up to 10 days with predefined settings or up to 5 months with backlighting off 1Battery life may vary based on user and computing conditions. Connect via Bluetooth low energy technology or the Logi Bolt USB Receiver 2The keyboard is not compatible with other Logitech USB receivers Easy – switch keys to connect up to three devices and switch between them at the push of a button Hand proximity sensors that turn the backlighting on Ambient light sensors that adjust backlighting brightness USB – C rechargeable. Full charge lasts 10 days – or 5 months with backlighting off 3Battery life may vary based on user and computing conditions. When enabled, it might prevent Bluetooth devices from connecting with your computer if you have not yet logged in.