Perfectly positioned to roll smoothly under just one finger the apple mouses scroll ball offers full 360 degree scrolling capability updown leftright and diagonally you can scroll long web pages pan full sized images maneuver around large spreadsheets control a video timeline and more and you can even click the scroll ball to access your favorite mac os x features such as dashboard spotlight or expos it looks and feels like a sleek one button mouse but the apple mouses smoot