Contour Design Unimouse Wireless R, Right-hand, Optical, RF Wireless, 2800 DPI, Grey Contour Design Unimouse Wireless R. Form factor: Right-hand. Movement detection technology: Optical, Device interface: RF Wireless, Movement resolution: 2800 DPI, Buttons type: Pressed buttons, Buttons quantity: 6, Scroll type: Wheel. Power source: Batteries. Product colour: Grey