The CHERRY DW 9100 SLIM combines innovative functions, outstanding workmanship, and a very slim design. The mix of aesthetics and optimum comfort is perfect for any modern work desk. A switch on the keyboard and mouse lets you toggle instantly between Bluetooth and 2.4 GHz connectivity. The nano USB receiver for 2.4 GHz wireless transmission is included in the bundle. In both cases, the data is transferred in with AES-128 encryption over a range of up to 32 feet.