Kensington SlimBlade™ Pro Wireless Trackball, Rechargeable Battery, Bluetooth 2.4GHz Connection Options (K72080WW)
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.

Kensington Expert Wireless Trackball Mouse (K72359WW) Black, 3.5" x 6.1" x 8"
The Expert Mouse Wireless Trackball gives you the freedom to be hyper-productive without being limited by a USB cable. The trackball can be paired through Bluetooth 4. 0 LE to save a valuable USB port, or connected via USB Nano receiver. KensingtonWorks software offers incredible customization, and optical tracking technology offers smooth, precise cursor control. Plus, our award-winning Scroll Ring lets you quickly scan up and down web pages or long documents. Add it all up and you get exceptional comfort and ease-of-use from the brand that has set the industry standard in trackballs for more than 20 years.