Product 1: Optical Tracking Technology provides 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.
Product 1: Unique scroll Ring let you move up and down web pages or documents with ease; ambidextrous design works equally well for both right-handed and left-handed users.
Product 1: Detachable Wrist rest softly cushions and cradles the hand and wrist in an ergonomic position for pain-free productivity during extended periods of activity on the computer.
Product 1: Free downloadable Kensington trackball works software provides a personalized experience, giving you the ability to assign a wide variety of program functions to each of the 2 buttons, as well as adjusting cursor and scrolling speeds.
Product 2: Optical tracking for superior cursor control.
Product 2: Unique touch scrolling — simply slide your finger around the outer ring of the trackball for effortless scrolling through web pages and long documents.
Product 2: Free downloadable KensingtonWorks software provides button customization.
Product 2: Ambidextrous design.