Kensington Pro Fit Ergo TB450 EQ - Trackball - ergonomic - optical - 7 buttons - wireless - 2.4 GHz, Bluetooth - USB wireless receiver

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 2.4 GHz 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.