Compact, space-saving design is ideal for smaller workspaces, without compromising a complete full-size layout and number pad. Softer, silent keys and a low-profile design maintain wrist comfort. Tiny Logitech® Unifying receiver. receiver stays plugged into your laptop's USB port and lets you connect up to six compatible devices. 2.4 GHz wireless technology provides reliability and freedom without delays or dropouts. Up to three-year battery life keeps you working longer without interruption of battery replacement.