Hama "MC-300" Optical 3-Button Mouse, Cabled, black Silent main buttons: allow undisturbed and relaxed working without clicking noise Rubberised surface: for improved grip and comfort The perfectly symmetrical shape: accommodates both left-handed and right-handed users Optical 3-button mouse: for exact sensing and precise control No software required: simply plug in and start Scroll wheel: with key function for easy and comfortable navigation