Kensington SlimBlade Pro Wireless Trackball Professional reviewers and ergonomists agree that finger-operated trackballs are superior to thumb-based trackballs when it comes to precision and hand comfort. At the same time, professional users prefer the convenience of wireless controllers. Kensington has responded with its most advanced trackball yet - the SlimBlade Pro Trackball. Now you can enjoy the precision and ease of a finger-operated trackball that includes Bluetooth, 2.4GHz wireless and wired capabilities, together with unique dual-sensor ball-twist scrolling. All in a sleek design that saves valuable desk space and can be used with either hand. It’s the ultimate in accuracy, comfort and control. FEATURES 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. 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 since it requires less arm and wrist movement. Superior Optical Tracking Technology Dual sensors accurately track the large 55mm ball, giving you precise cursor control that requires less hand and wrist movement. Provides highly accurate and responsive cursor tracking and scrolling. Plug & Play Installation and Flexible Control Customisation Simply plug in the USB cable to the trackball and you will be up and running quickly. Free downloadable KensingtonWorks software provides an easy-to-configure personalised experience, letting you assign a wide variety of program functions to 8 sets of programmable buttons with KensingtonWorks install...