Satechi Bluetooth Wireless Smart Keyboard Black ST-BWSKWB.  Wireless bluetooth up to 33 ft. Change instantly from Bluetooth to wired connection.  Switch between up to five connected devices.  Quiet, responsive keys.  Auto-sleep function for extended battery life. No-slip rubber feet.  Uses (2) AAA batteries, not included.  User manual included.  Please check pictures and feel free to ask questions.