This is a Logitech Cordless MouseMan Pro, model M-RC44, a wireless ball-tracking mouse from Logitech's cordless lineup. The mouse is white and cream colored plastic with two top buttons and the classic ergonomic MouseMan shape, and the bottom panel opens to reveal the rolling tracking ball along with the battery compartment and channel-set dials.
This is a Pre-owned mouse in generally good working shape for its age, sold as pictured. The rubber feet on the bottom have yellowed with age and there is some surface dirt and light staining on the housing and battery compartment from prior use; the tracking ball and its retaining cover are both present and intact. It ships with the two AAA batteries currently installed, and no USB receiver is included. Functionality has not been tested.