The dark gray Contour Design SliderMouse Pro Wireless with Regular Wrist Rest is a centered mouse that eliminates the need to stretch, twist, or strain while scrolling and navigating. Featuring an integrated mechanical Sliderbar, the SliderMouse Pro allows for intuitive navigation while your hands rest comfortably on the entire width of the mouse. A magnetic wrist rest cover allows for customization using a range of materials and covers, available separately. This mouse supports Bluetooth and 2.4 GHz wireless connectivity and delivers up to 3 months of battery life. A removable USB cable is included.