The Kensington SlimBlade Pro Trackball delivers the precision and ease of a finger-based trackball with Bluetooth, 2.4 GHz wireless range together with unique dual-sensor ball-twist scrolling. Its sleek design saves valuable desk space and can be used with either hand. It's the ultimate in accuracy, comfort and control. Special features: Wired and wireless triple connection capability Precision movement with twist scrolling Ambidextrous design with sleek, low-profile footprint Superior optical tracking technology Plug and Play installation and flexible control customisation 128-bit AES encryption Compatible with Windows and macOS