Full-size keyboard + palm rest (included) Integrated numpad, arrow keys Smart backlighting: hand proximity sensors turn the backlighting on and ambient light sensors adjust backlight brightness The MX Keys for Business and MX Master 3 forBusiness combo with palm rest. Its the ultimatekey to productivity, giving users with specializedworkflow needs the power to truly master whatthey make. Keyboard Bluetooth Low Energy (BLE) Yes Frequency band 2.4 GHz Multi-device support Yes Keyboard number of keys 108 Numeric keypad Yes Keyboard form factor Full-size (100%) Pointing device No Keyboard language Spanish Keyboard layout QWERTY Device interface Bluetooth Connectivity technology Wireless Recommended usage Office Design Surface coloration Monochromatic Product colour Graphite Wrist rest Yes Keyboard style Straight Backlight colour White Backlight Yes Features Wireless range 10 m Power Number of batteries supported 3 Charging source USB Type-C Rechargeable Yes Service life of battery 5 month