Lenovo 4X31K03939, Full-size (100%), Wireless, RF Wireless + Bluetooth, Scissor key switch, Grey, Mouse included Lenovo 4X31K03939. Keyboard form factor: Full-size (100%), Connectivity technology: Wireless, Device interface: RF Wireless + Bluetooth, Keyboard key switch: Scissor key switch. Cable length: 1 m. Product colour: Grey. Mouse included