Kensington SlimBlade Pro Trackball combines precision, comfort, and wireless convenience in an advanced controller offering sleek, ergonomic design and dual-hand ambidextrous control. Includes choice of Bluetooth, 2.4GHz wireless and wired connection options. Rechargeable battery provides up to 4-month capacity. Nimble, finger-operated trackball features dual-sensor ball-twist scrolling for quick navigation. Takes up less desk space than a mouse and is more comfortable during extended use, requiring less arm and wrist movement. Optical-tracking technology delivers superior precision for increased productivity. Free KensingtonWorks software allows you to customize buttons, cursor and scrolling speeds. Plug & Play installation. PC and Mac compatible.