With the K350 Wireless Keyboard, your hands get cradled in comfort by the Comfort Wave Design. When youre not typing, the cushioned palm rest will help make your hands even happier. The three-year battery life is so hassle-free you just might forget it uses batteries at all. Wired/Wireless: Wireless; Maximum Wireless Range: 60 ft; Connector/Port/Interface: USB; Keyboard Design: Wave.