Wireless Wave Combo MK550
Comfort curves without the learning curve With contoured curves in all the right places, this ergonomic keyboard and mouse give you the support you need to minimize hand and wrist strain-even after spending all day on your computer. More comfort also means you can type as you normally do using the standard keyboard layout you already know. Constant Curve design guides hands and fingers into just the right natural typing position. A battery life of up to three years for the keyboard and two years for the mouse.