RollerMouse Red plus Controlled by a fully open rollerbar, which encourages the use of both hands Unparalleled precision with tracking technology inside the rollerbar - up to 2400 dpi Aluminum body with detachable extended, leatherette palm support. Eight key functions made for productivity and ergonomics, including the "one touch" double click, copy and paste Keyboard risers make it possible to customize keyboard height and angle to ensure optimal comfort and working position