Kensington Pro Fit Ergo TB450 Trackball Ear Cushions Simplify system builds with a

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Kensington Pro Fit Ergo TB450 Trackball Ear Cushions Simplify system builds with aKensington Pro Fit Ergo TB450 Trackball Ergonomic Design The 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 Capability The TB450 includes a choice of Bluetooth Low Energy (LE) and 2. 4GHz wireless connection (2. 4GHz nano receiver included). Long Battery Life The TB450 offers up to 18 months of use with 2. 4GHz and up to 15 months of