With the inclusion of a backlit ball and HALO effect, the R60 Backlit module is a designed for use in low light level environments, delivering precise cursor control over prolonged periods of use. Similar to the standard configuration the R60 Series is supplied with a translucent injection moulded plastic case, USB and PS/2 output, and three integrated switches which provide the conventional left, middle and right button functionality found in commercial trackballs/mice. The unit has been designed to be a standalone desktop device and optimizes desk space when compared to a mouse.