Features:

• Laser technology delivers 20 times the performance of standard optical tracking
• Pre-programmed side button launches Dashboard
• Miniature sensors detect even the slightest movement
• Top-shell design matches other Apple products
• Bluetooth technology and Touch-sensitive technology

Editor Reviews:

Product Description:
The Mighty Mouse's tracking engine is based on powerful laser technology that delivers 20 times the performance of standard optical tracking, giving you more accuracy and responsiveness on more surfaces. It works just as well on your office desk as it does on a table at your favorite coffee spot without a mousepad. The Might Mouse combines the capability of a multibutton mouse with Apple's signature top-shell design for both form and function. Mighty Mouse's Scroll Ball features miniature sensors that allow you to manipulate what appears on your screen merely by moving your finger. The 360-degrees scrolling perfectly positions to roll smoothly under just one finger. Touch-sensitive technology under Mighty Mouse's seamless top shell detect where you're clicking, transforming your sleek, one-button mouse into a two-button wonder. Pan images in iPhoto, view timelines in iMovie HD and Final Cut Pro, traverse bars in GarageBand and Logic Pro while sipping your morning cup of coffee or typing. Pre-programmed to launch Dashboard, Mighty Mouse's side buttons show you all your open windows in Expose with a squeeze. Mac OS X gives you the capability to choose any application from the intuitive System Preference pane.

Rating : - Mighty Mouse not great for 3D
The good: can use with either hand ( to relieve long sessions); 3 buttons needed for newer programs.
Mac compatible.
The bad: Limited options for programming right button settings. Right button settings not compatible with many 3D programs; scroll ball OK except if scroll finger is "damp" (sweat; moisture transfer from water glass to hands; etc) it will stick. My solution: dry hands and turn mouse over and roll button around on top of mouse pad ... seems to work. Side buttons to hard to press ... worthless to me.
The ugly: Recommend you try other brands suggested by other reviewers