The Kensington Pro Fit TB550 Mouse, from ACCO Brands Corporation, offers an ergonomic design with a sculpted shape for all-day comfort. Its unique 45° tilt helps improve wrist and forearm alignment. This mouse boasts a rechargeable battery, providing up to 4 months of usage with a single charge. The Pro Fit Ergo TB550 features dual wireless connection capability, with both Bluetooth Low Energy (LE) and 2.4GHz options. The mouse is made with 70% post-consumer recycled ABS, and includes a patented cleaning system with a built-in trackball ejection button. The high-quality optical tracking ensures smooth cursor control and optimal precision.