The Kensington Pro Fit Ergo Wireless Keyboard has a split and sloped keyboard with adjustable reverse tilt and built-in wrist rest. The ergonomist approved Pro Fit Ergo Wireless Keyboard positions your hands for improved comfort. Features include dual wireless (2.4GHz and Bluetooth 4.0 LE) with 128-bit AES encryption, quiet typing, spill-proof keys, F-keys for shortcuts, caps lock, numbers lock, scroll lock, a three-mode power-saving switch and a replaceable receiver.