With its sleek gray shape and black button eyes, this innovative mouse looks like the real thing. From Logitech, Marble Mouse features an optical, space-saving tracking system that delivers superior precision, smooth motion and resistance to dust and grime. Mouse is easy to use in either hand while reducing hand and wrist movement. Customize your own mouse settings with the click of a button. Comes with easy-to-install MouseWare software for fast Internet access and easy Web scrolling using either Windows or Macintosh applications.