The Targus 8-Button Laser USB Mouse utilizes the latest in laser technology providing 20 times more tracking sensitivity than typical optical mice; the result – greater accuracy and improved use on shiny surfaces. Created for maximum comfort, the full-size ergonomic design will be especially appreciated during extended use. Increase productivity with the convenient pre-programmed buttons that reduce hand and wrist movements from the mouse to the keyboard. Scroll-up and scroll-down, launch Internet browser, and Internet navigation "forward" and "back" buttons provide simple and efficient short cuts for Windows use.