Battery powered Battery Numeric keyboard Y HP 655 Wireless Keyboard and Mouse Combo, Full-size (100%), Wireless, RF Wireless, Membrane, Black, Mouse included HP 655 Wireless Keyboard and Mouse Combo. Keyboard form factor: Full-size (100%), Connectivity technology: Wireless, Device interface: RF Wireless, Keyboard key switch: Membrane, Recommended usage: Home. Product color: Black. Mouse included