KENSINGTON ValuMouse Three-button 80004518 K72110EU Product Description: Kensington ValuMouse - mouse - USB - black Device Type: Mouse Connectivity Technology: Wired - USB Colour: Black Orientation: Right and left-handed Dimensions (WxDxH): 6 cm x 10.8 cm x 3.8 cm Weight: 90 g Movement Detection Technology: Optical Buttons Qty: 3 Movement Resolution: 1000 dpi Features: Scrolling wheel, ambidextrous design OS Required: Apple MacOS X 10.5 - 10.8, Microsoft Windows 7 / 8 / 8.1 / 10 Manufacturer Warranty: 5-year warranty