Kensington Expert Mouse Optical Trackball Preference:Wireless Supports two monitors to a

Supports two monitors to a combined weight of up to 18kg

by creating a more relaxed and creative workspace

one-hand counterbalance weight adjustment

RBM Twisted Little Star Features

Support groove on the surface to mount smart phone & tablet

Kensington Expert Mouse Optical Trackball Preference:Wireless Supports two monitors to aHave a ball with the Kensington Expert Mouse Optical Trackball. The product employs DiamondEye optical technology for smooth and precise cursor control. Surrounding the ball is an award Scroll Ring that puts scrolling right at your fingertips, enabling you to fly through web pages and documents. There's even a soft wrist rest included with the Expert Mouse trackball for comfort and convenience no mouse can match. Designed for PCs and Macs and a large