Professional reviewers and ergonomists agree that finger-operated trackballs are superior to thumb-based trackballs when it comes to precision and hand comfort. At the same time, professional users prefer the convenience of wireless controllers. Kensington has responded with its most advanced trackball yet: the SlimBlade™ Pro Trackball. Now you can enjoy the precision and ease of a finger-operated trackball that includes Bluetooth, 2.4GHz wireless and wired capabilities, as well as unique dual-sensor ball-twist scrolling. All in a sleek design that saves valuable desk space and can be used with either hand. It’s the ultimate in accuracy, comfort, and control.