What is a TF card for a Bluetooth speaker?

Memory card slot - definition - tf card slot meaning A TransFlash card is the first tiniest memory card of the fingernail size It is tiny and measures 11x15x1mm Launched in 2004 by SanDisk, it was a tf karten slot However, high capacity memory card is available at this time, Speed Class write is defined to perform sequential writes to a completely un-fragmented area (

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