Kensington Kensington Orbit Optical Trackball Mouse USB 20 LeftRight Hand Use BlackSilver

If you're looking for a simple way to transition from a mouse to a trackball, trust the Orbit Optical Trackball. It offers better ergonomics, with less wrist and hand movement to ease repetitive-stress injuries. Optical tracking technology delivers precise cursor control and the two-button design provides a familiar experience for mouse converts. Medium 40 mm ball is designed as a perfect sphere to provide exceptional precision. Compact footprint takes up less desk space than youd need to operate a mouse. Ambidextrous design works equally well for both right-handed and left-handed users. Plug