Mouse Ergonomic KENSINGTON EQ TB450

The sculpted design provides all-day comfort and the unique 45-degree tilt helps improve the angle of the wrist and forearm. Dual wireless connectivity (Bluetooth + 2.4 GHz) Long battery life of up to 18 months of use with 2.4 GHz and up to 15 months of use with Bluetooth - Made from 51% recycled material - Built-in trackball eject button makes it easy to remove for cleaning when needed - 4 switchable cursor speeds (400, 800, 1,200 and 1,600 DPI) - 128-bit government-grade AES encryption providing added security to deter hackers - Battery: 1 x AA (included) - Dimensions: 13.8 x 9.34 x 5 cm - Weight: 0.28kg