Kensington Pro Fit Ergo TB550 Trackball Mouse, Rechargeable Battery Included, Bluetooth(LE) & 2.4GHz Wireless Connections, Ergonomic Design, 4D Scroll Wheel, Charcoal Blue (K72196WW) Charcoal Blue/Grey Ball Wireless B00006HYTV 8 and higher

8 and higher

so backup power will always be available

Enjoy multi-device creativity by connecting to up to 3 devices at once

The membrane key switch enables fast and effortless typing

Kensington Pro Fit Ergo TB550 Trackball Mouse, Rechargeable Battery Included, Bluetooth(LE) & 2.4GHz Wireless Connections, Ergonomic Design, 4D Scroll Wheel, Charcoal Blue (K72196WW) Charcoal Blue/Grey Ball Wireless B00006HYTV 8 and higherUsing a mouse may feel familiar, but it can also provide less than precise navigation, cramped desk spaceand cramped hands. The Pro Fit Ergo TB550 Trackball brings the comfort and convenience of trackball technology to users who want to improve wrist and forearm alignment or work in tight areas with limited desktop space. An ideal solution for people who want to try a trackball for the first time, it is made of 51% recycled plastic and includes long