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MicroSD card buying guide 2017: Understanding microSD card speeds, Formats, and Types - Smartprix Bytes
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Markings: speed, size and class | Understanding microSD and SD cards: speeds, markings and more | Adafruit Learning System
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Amazon.com: MOVE SPEED 128GB Micro SD Card, Up to 170MB/s Micro SD Memory Card, A2 U3 V60, 4K Full HD Video Recording, with Card Reader and Adapter, for Driving Recorder : Electronics
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