Kensington Orbit Wireless Trackball with Scroll Ring - Black - Optical - Wireless - Bluetooth/Radio Frequency - 2.40 GHz - Black Red - 1 Pack - 1600 dpi - Scroll Ring Scroll Ball - Symmetrical

Manufacturer : ACCO Brands Corporation

Manufacturer Part No : K70990WW

Features

• Dual wireless connectivity offers the flexibility of 2.4 GHz and Bluetooth (3.0 and LE) with 128-bit AES government-grade encryption security.
• The scroll ring lets you spin the dial to move up and down web pages or documents with complete ease. And the 40mm ball's hard surface is specially designed as a perfect sphere for precise tracking and control.
• Four DPI settings let you easily adjust the cursor speed to fit your needs by selecting the appropriate level (400 800 1200 or 1600) - lower DPI for precision editing and higher DPI for word processing or casual browsing.
• Ambidextrous design works equally well for right-handed & left-handed users. Trackball reduces wrist and hand movement to ease repetitive-stress injuries.
• Free KensingtonWorks downloadable software provides a personalized experience giving you the ability to assign a variety of functions (including shortcuts) to the buttons and adjust cursor and scrolling speed.
• Optical tracking technology delivers precise cursor movement for superior accuracy so you can get where you want on the screen quickly with less hand movement improving productivity and efficiency.
• A detachable wrist rest delivers soft cushioning to support the hand and wrist in ergonomic comfort for pain-free productivity during extended periods of activity on the computer.
• Mac and PC compatible.