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JSHFEI 5mw Pointer pen Logitech R400 2.4 GHz Wireless Presenter IR PPT Presenter Pen 650nm Pointer Red Remote Control pen - AliExpress
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Logitech R400 Wireless Presenter - Laser - Wireless - 49.21 ft - Radio Frequency - 2.40 GHz - Black - 1 Pack - USB - 2
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Logitech Wireless Presenter R400, Wireless Presentation Remote Clicker with 50 ft Red Laser Pointer 910-001356 : Electronics - Amazon.com
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Amazon.com : Logitech Wireless Presenter R400, Presentation Wireless Presenter with Laser Pointer (Renewed) : Office Products
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Logitech Wireless Presenter R400, Wireless Presentation Remote Clicker with Laser Pointer - Newegg.com
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The Logitech R400 Wireless Presenter's inexplicable 'sabotage feature' | by Grenville Hamlyn | Medium
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