Kensington SlimBlade Pro Trackball

Features | Wired + Wireless Triple Connection Capability Includes choice of Bluetooth, 2.4GHz wireless and wired connection options for maximum flexibility. Rechargeable Battery Provides 4 months of battery life with single charge via USB port. Precision Movement with Twist Scrolling Large 55mm trackball lets you scroll up and down web pages and documents with quick precision via a simple twist. Ambidextrous Design with Sleek, Low-Profile Footprint Low-profile shape allows all-day comfort for both right-handed and left-handed users. The trackball takes up less desk space than what is needed to operate a mouse and is more comfortable during extended use because ...