Kensington ExpertMouse (Optical Black) 64325A [Genuine Product, 5-Year Warranty]

Features a symmetrical design for use with either hand. Employs an optical sensor (diamond eye) for precise and accurate control. Includes four functional and easy-to-use buttons, and the first scroll ring in the ExpertMouse series.

High-end Kensington Trackball Cable length: 180cm Ball diameter: 55mm Accessories: Palm rest, USB-PS/2 adapter, user guide Features a symmetrical design for use with either hand.