BakkerElkhuizen Evoluent4 Wired Left Handed Vertical Mouse Medium Black/Grey/Silver BNEEVL4The Evoluent4 Left Wired vertical mouse is a patented ergonomic mouse which will help you to work healthy, comfortable, and productive on your computer, laptop or mobile devices. It has six programmable buttons, a directly reachable DPI button to adjust the pointer speed into one of the four different values (800 1300 1800 2600) that suits you best, illuminated Evoluent logo turns off when the system is in power saving mode, and a lip which supports