Kensington SlimBlade™ Pro Trackball combines precision, comfort and wireless convenience in an advanced controller combining 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 customise buttons, cursor and scrolling speeds. Plug & Play installation. Windows and macOS compatible. Includes choice of Bluetooth, 2.4GHz wireless and wired connection options for maximum flexibility. Compatible with Bluetooth LE (Bluetooth 4.0 /5.0; legacy Bluetooth 3.0 is not supported). Features 2.4GHz wireless dongle (USB-A with USB-C to USB -A adapter) and 1.5m USB-C to USB-A charging cable (USB-C port on the trackball). Rechargeable battery provides 4 months battery life with single charge via USB-C port. Large 55mm trackball lets users scroll up and down web pages and documents with quick precision via a simple twist. 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 since it requires less arm and wrist movement. Dual sensors accurately track the large 55mm ball, giving users precise cursor control that requires less hand and wrist movement. Provides highly accurate and responsive cursor tracking and scrolling. Simply plug in the USB cable to the trackball and users will be up and running quickly. Free downloadable KensingtonWorks™ software provides an easy-to-configure personalized experience, giving users the ability to assign a wide variety of program functions to 8 sets of programmable buttons with KensingtonWorks™ installed. (Features 4 individual buttons + 4 sets of combo buttons .) Government-grade 128-bit AES encryption for enhanced security to deter hackers from monitoring wireless connection and capturing sensitive information. Supports Windows 7 or later [32-bit/64-bit*], macOS 10.13 or later. ***Windows 11, 64-bit only