This full-size mouse utilizes Blue Track, the newest in optical tracking technology. It tracks faster & easier on a wider range of surfaces than lasereven on glass! The full-sized ergonomic design provides hours of greater comfort for easier use. Browse through the Web or documents rapidly with the backward & forward buttons at easy reach on the side of the mouse. Rubber grips add to the comfort & ease of use. Connector / Port / Interface: USB 2.0; Left / Right Hand Use: Right; Mouse Technology: Optical; Wired / Wireless: Wired.