Kensington Orbit Optical Trackball
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Delivers comfort and precision
Customizable 2-button design via TrackballWorks software
Compatible with Windows (8, XP, and Vista), macOS (10.8 and later), and Chrome (OS 44 and later)
Optical tracking for superior cursor control
Compact design, stays put and takes up less space
2 year warranty (Only valid if purchased through Kensington Authorized Resellers)