Whether you're working from home, the office or on the go, today's users seek device solutions that prioritise both comfort and productivity, whilst keeping sustainability at the forefront.the pro fit ergo tb550 trackball allows users to effortlessly transition from a mouse to a trackball and unlock the ergonomic advantages and space saving benefits it offers. With its thoughtful design, the tb550 utilises 51% recycled material, reducing the use of new plastics.bluetooth low energy or 2.4ghz wireless connectivity offer maximum flexibility. The tb550 also features a rechargeable battery, a 4d scroll wheel and a patented ball ejection system that simplifies cleaning.elevate your work setup with the pro fit ergo tb550 trackball where comfort, productivity and sustainability converge.features. A sculpted ergonomic design provides all day comfort. The pro fit ergo tb550 features a unique 45 degree tilt that helps improve wrist and forearm alignment. . A 4d scroll wheel supports both vertical and horizontal scrolling. . The pro fit ergo tb550 includes a choice of bluetooth low energy le and 2.4ghz wireless connections 2.4ghz usb a nano receiver included.. The pro fit ergo tb550's rechargeable battery provides up to 4 months of battery life from a single charge.. 51% of overall plastic is recycled material.. The pro fit ergo tb550's unique, easy to clean design features a built in trackball ejection button to effortlessly remove the trackball for cleaning when needed.. A high quality optical sensor accurately tracks the 34mm thumb operated trackball, giving users smooth cursor control and optimal precision. . The trackball features 4 switchable cursor speeds 400, 800, 1200 and 1600 dpi.. Users will be up and running quickly thanks to plug play installation for simple setup. . The tb550 can be personalised with free kensingtonworks software to enhance productivity. . The pro fit ergo tb550 includes government grade 128 bit aes encryption for enhanced security to deter hackers.dimensions. Height 50mm.. Width 93cm. . Depth 138mm.