Lenovo 4Y41K04067 keyboard RF Wireless + Bluetooth QWERTY UK English Grey Compatible processor series___Intel® Core™ i3. Intel® Core™ i5. Intel® Core™ i7. Intel® Core™ i9 Smooth Motion Smooth Motion Discover hidden gems or flank enemies in full stealth with the ultrawide 21:9 aspect ratio USB Battery technology Lithium Ion (Li Ion) Keyboard battery type Built in battery Battery capacity 420 mAh Charging source USB Type C Battery recharge time 2 h Mouse Mouse included No Operational conditions Operating temperature (T T) 0 40 �C Operating relative humidity (H H) 20 95% Packaging content Receiver included Yes Number of products included 1 pc(s) Weight & dimensions Keyboard weight 586 g Keyboard dimensions (WxDxH) 437 91 cm Keyboard form factor Full size (100%) Keyboard layout QWERTY Keyboard number of keys 105 Hot keys Yes Pointing device No Numeric keypad Yes Keyboard language UK English Device interface RF Wireless + Bluetooth Bluetooth Low Energy (BLE) Yes Keyboard keys operating life 10 million characters Multi device support Yes Ports & interfaces Cable length 1 m Design Product colour Grey Backlight No Surface coloration Monochromatic Technical details Product colour Grey Backlight No Surface coloration Monochromatic Numeric keypad Yes Number of products included 1 pc(s) Ergonomics Cable length 1 m Features Cable length 1 m Receiver Wireless receiver interface USB Type A Power Power source type Battery