Kensington Pro Fit Ergo Vertical Wireless Trackball

Ergonomist-Approved Design - Promotes proper wrist, arm, and shoulder alignment to maximize comfort and minimize potential strains. Easy to Use - Reduces learning curve when transitioning from a mouse to a trackball. Premium Precision & Speed - Provides more accurate and smooth cursor control, and allows you to easily switch between DPI settings fo... morer different cursor speed control. Flexible Wireless Connection Options - Allows stable connectivity for up to three computers. Plug & Play or Customiz

Ergonomist-Approved Design - All-day comfort is provided through an ergo design with a 60° tilt and natural handshake position to improve wrist and forearm position Easy to Use - Uses the same left click right click and scroll wheel operation as a traditional mouse while providing the advantages of a trackball with a simple roll of the thumb Premiu... morem Precision & Speed - The high-quality optical tracking sensor 34mm thumb-operated trackball and triple DPI switch provide smooth cursor control optim