Philips 4000 series SPK6407B/31, Full-size (100%), Wireless, RF Wireless + Bluetooth, QWERTY, Black Philips 4000 series SPK6407B/31. Keyboard form factor: Full-size (100%). Keyboard style: Straight. Connectivity technology: Wireless, Device interface: RF Wireless + Bluetooth, Keyboard layout: QWERTY, Keyboard number of keys: 110, Recommended usage: Universal. Product color: Black