Large 55mm ball design and Diamond Eye optical tracking for precise cursor control; Patented scroll ring lets you scan up and down pages with ease Detachable, ergonomic wrist rest supports hand and wrist for improved comfort; Ambidextrous design Customizable 4-button design, scroll speed and cursor speed via KensingtonWorks software Connects wirelessly via built-in Bluetooth 4. 0LE or with the USB dongle using 2. 4Ghz wireless; Auto-sleep helps conserve battery life Compatible with Windows (7, 8, 8. 1, and 10), macOS (10. 8 and later), and Chrome (OS 44 and later); 3 year and lifetime technical support
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Item# : SPM13128546503
Model # : K72359WW