Kensington Pro Fit Ergo Vertical Wireless Trackball (K75370WW)

• 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
• Premium Precision & Speed – The high-quality optical tracking sensor 34mm thumb-operated trackball and triple DPI switch provide smooth cursor control optimal precision and easy cursor speed transitions
• Flexible Wireless Connection Options – Connect your vertical trackball to up to 3 different devices – one via the 2 4GHz nano dongle that stows inside the trackball body and two additional connections via Bluetooth
• Plug & Play or Customize – Experience plug and play default settings or use KensingtonWorks software to set pointer and scrolling options and professionally customize 9 programmable buttons to tackle common tasks with one touch
• 1 Year Warranty