KeySonic KSK-5020BT-L, Full-size (100%), Wireless, Bluetooth, QWERTZ, Black KeySonic KSK-5020BT-L. Keyboard form factor: Full-size (100%). Keyboard style: Straight. Connectivity technology: Wireless, Device interface: Bluetooth, Keyboard layout: QWERTZ, Keyboard number of keys: 78. Product color: Black