The Pro Fit® Ergo TB450 Trackball combines the feel of a wireless mouse with the precision of a trackball. It uses an ergonomic design with a 45° tilt that helps improve wrist and forearm alignment, takes up less desk space than a conventional mouse, and is more comfortable during extended use. Users can choose Bluetooth® Low Energy (LE) and 2.4GHz wireless connection options for maximum flexibility. To help reduce global environmental impacts, the TB450 is made of 50% recycled plastic. It also features long battery life, patented ball ejection system for easy cleaning, and precision optical-tracking technology.Ergonomic DesignThe sculpted design provides all-day comfort and features a unique 45° tilt that helps improve wrist and forearm alignment.Dual Wireless (Bluetooth® + 2.4GHz) Connection CapabilityThe TB450 includes a choice of Bluetooth® Low Energy (LE) and 2.4GHz wireless connection (2.4GHz nano receiver included).Long Battery LifeThe TB450 offers up to 18 months of use with 2.4GHz and up to 15 months of use with Bluetooth®. Use of non-Alkaline batteries may result in shorter battery life.Adopts GRS-certified 70% Recycled ABS. 50% Of Overall Plastic Is Recycled Plastic.Kensington is committed to help reduce the impact of plastic on the global environment.Patented Cleaning SystemThe unique, easy-to-clean design features a built-in trackball ejection button to effortlessly remove the trackball for cleaning when needed.High-Quality Optical TrackingA high-quality optical sensor accurately tracks the 34mm thumb-operated trackball, giving users smooth cursor control and optimal precision. The TB450 offers easy cursor speed transitions with 4 DPI options: 400, 800, 1200, 1600.Plug & Play InstallationUsers will be up and running quickly thanks to Plug & Play Installation for simple setup. The TB450 can be personalized with free KensingtonWorks™ software to enhance productivity.128-bit AES EncryptionThe TB450 includes government-grade 128-bit AES encryption for enhanced security to deter hackers from monitoring wireless connection and capturing sensitive information.