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Dual Wireless with 128-bit AES Encryption SecurityThe flexibility of 2.4GHz and Bluetooth LE, with government-grade encryption.Scroll Ring and Medium BallSpin the dial to move up and down web pages or documents with complete ease. The 40mm ball’s hard surface is specially designed as a perfect sphere for precise tracking and control.Four DPI SettingsEasily adjust the cursor speed to fit your needs by selecting the appropriate DPI level (400, 800, 1,200, or 1,600) — lower DPI for precision editing, and higher DPI for word processing or casual browsing.Ambidextrous DesignWorks equally well for right-handed and left-handed users. Trackball reduces wrist and hand movement to ease repetitive-stress injuries.KensingtonWorks™ CustomizationFree 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. *Windows ARM-based computers are currently not supported. Please check back for future updates on compatibility.Optical Tracking TechnologyDelivers 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.Detachable Wrist RestSoft cushioning supports the hand and wrist in ergonomic comfort for pain-free productivity during extended periods of activity on the computer.CompatibleWorks with Mac and PC.SmartFit™ - Comfort Made EasyThis product is designed to comfortably fit and be effective for users of all hand sizes.The Kensington trackball legacy continues with the Orbit® Wireless Trackball with Scroll Ring. This trackball features a patented scroll ring that allows you to scroll up and down pages with ease, customisable buttons, dual wireless connectivity (2.4 GHz, Bluetooth LE) with 128-bit AES government-grade encryption security, four DPI settings (400, 800, 1,200, or 1,600) to easily adjust the cursor speed to fit your needs, a detachable wrist rest, ambidextrous design and plug-and-play ease for Mac or PC.

EPSON T822 High Capacity Cyan Ink Cartridge with Sensormatic