Logitech Wireless Keyboard K320 Advanced 2.4 GHz wireless for an ultra-reliable, powerful connection and cordless freedom Tiny Unifying receiver stays in your notebook-plug it in, forget it, even add compatible Unifying devices without the hassle of multiple USB receivers Up to three years of battery life virtually eliminates the need to change batteries Full-size layout gives you the room you need to type comfortably Quiet, responsive keys reduce finger fatigue and barely make a sound