Hand-Held Multipurpose Wireless Mouse is new generation ergonomic mouse, combining the optical mouse with the trackball mouse creatively. Its unique shape makes it not need the plane support. You can adjust your posture freely, even if you are sitting on sofa or lying down, you can also use it conveniently, especially when you are in the narrow space, like in the car, train or in the plane. That greatly ease the harm of palm joint or muscle for long-time using mouse. You certainly can use it on the desktop like ordinary optical mouse.