Kensington Expert Mouse Wired Optical Trackball

Compatible with Windows (7, 8, 8. 1, and 10), macOS (10. 8 and later), and Chrome (OS 44 and later); 5 year and lifetime technical support Its large ball gives you maximum precision and control while tracking. Customizable 4-button design, scroll speed and cursor speed via KensingtonWorks software Award-winning Scroll Ring allows precise fingertip scrolling. The comfortable, ergonomic design includes a detachable wrist rest that cradles hand in comfort. Designed to maximize your productivity. Detachable, ergonomic wrist rest supports hand and wrist for improved comfort; Ambidextrous design