Kensington Profit Wireless Vertical Trackball Mouse For Laptop/Computer Black

Ergonomist-approved mouse-converting design with 60 degree of tilting angle which helps promote more neutral wrist, arm and shoulder alignment, reduce pain and maximize comfort.

Best-in-class optical tracking sensor and thumb operated 34mm trackball
Thumb-operated mouse-converting trackball that mitigates learning curve for traditional mouse
Wireless dual connection via 2.4GHz Nano receive or Bluetooth
Plug-and-Play with no driver installation needed