The light gray Contour Design RollerMouse Pro Wireless with Slim Wrist Rest is a centered mouse that eliminates the need to stretch, twist, or strain while scrolling and navigating. Featuring a large built-in scroll wheel, the RollerMouse Pro allows for intuitive navigation in a comfortable and ergonomic position. Adjust the dpi of the mouse to a comfortable sensitivity between 600 and 2800 dpi for a personalized feel. 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.