The wireless BakkerElkhuizen Evoluent 4 vertical mouse helps relieve muscle tension in the arms and wrists so that you can stay productive without pain. The mouse's vertical setup minimises wrist rotation, protecting your joints and tendons. Other highlights: - Quick and precise navigation for fluid working - Short adoption time with natural posture - 4 x Selectable speeds (800, 1300, 1800, 2600 dpi) System requirements: Windows 7, 8, 10, OS X 10.5 < A mouse pad is recommended when using a vertical mouse. BakkerElkhuizen guarantees the longevity of its products. Register your product before the basic warranty expires on the manufacturer's website using the registration code or the EAN number on your product for an extended warranty of up to 5 years on electronics or even longer warranties on non-electronic products! * Extended warranties apply to all non-electronic products with the exception of all gas spring parts, which are covered by a 5-year manufacturer warranty.