This provides the total answer for professional presentations.
Gyration's Professional wireless RF keyboard has a generous 100 foot range and unlike infrared models, has no line-of-sight limitations. The Keyboard's lightweight and durable design enhances portability. Conveniently placed Internet and multimedia keys allow you to perform common tasks with one push of a button.
Included used Air Mouse Gyration Set (In-Air Motion-Sensing) with charging station and additional accu.
No guarantee!
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