Dimensions MX Keys Keyboard Height: 131.63 mm Width: 430.2 mm Depth: 20.5 mm Weight: 810 g Unifying USB Receiver Height: 18.4 mm Width: 14.4 mm Depth: 6.6 mm Weight: 2 g Palm Rest Height: 64 mm Width: 420 mm Depth: 8 mm Weight: 180 g Technical Specifications Dual connectivity Connect via the included Unifying USB Receiver or Bluetooth low energy technology Easy-switch keys to connect up to three devices and easily switch between them 10 meters wireless range 5Wireless range may vary depending on operating environment and computer setup. 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 6Battery life may vary based on user and computing conditions. On/Off power switch Caps Lock and Battery indicator lights Compatible with Logitech Flow enabled mouse