Apple Wired Mouse Innovative Scroll Ball and button: Perfectly positioned to roll smoothly under just one finger, the Apple Mouse's Scroll Ball offers full 360-degree scrolling capability - up/down, left/right and diagonally. Touch-sensitive top shell: It looks and feels like a sleek one-button mouse, but the Apple Mouse's smooth top shell hides a powerful secret: touch-sensitive technology under the shell detects which part of the mouse you're clicking, so you can both left-click and right-click. Force-sensing side buttons: When you give the Apple Mouse a squeeze, force-sensing side buttons can be configured to activate Mac OS X features such as Dashboard Customizable: If you have Mac OS X, the Apple Mouse can give you fingertip access to the special features you love. Simply use the system preference panel to configure the Apple Mouse in the way that makes you most powerful. Optical Tracking: Powered by a precision optical sensor, the Apple Mouse provides responsive and accurate cursor movement on almost any type of surface - no mouse pad required.