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http://technology-mun.com/inateck-2-4ghz-wireless-pointer-control-powerpoint-presentation-remote-control-clicker-presenter-pen-cordless-powerpoint-slide-changer-for-presentations-remote-control-range-up-to-66ft-black/
Inateck 2.4GHz Wireless Pointer Control Powerpoint Presentation Remote Control Clicker Presenter Pen, Cordless Powerpoint Slide Changer for Presentations - Remote Control Range: Up to 66ft, Black