Hamlet Wireless Compact Keyboard 400CWB is a compact keyboard equipped with Bluetooth and 2.4GHz RF wireless technology. It is the ideal solution to comfortably control devices such as Smart TV, Projectors, Media Center, Computer, Tablet PCs and Smartphones. The keyboard is powered by a built-in rechargeable Li-ion battery that provides extended use on a single charge and includes a nano USB receiver for the 2.4GHz wireless connection.