What is a TF card for a Bluetooth speaker?

There are three defined form factors for SD memory cards; full size, miniSD and microSD SD Card Card Capacity Type, SD, SDHC, SDXC and SDUC

TF cards have a structure factor that fits most cell phones and tablets They are utilized in compact music players and GPS gadgets for their minute

tf slot on bluetooth speaker Modular design, with DC-DC module cards 5 slot output for MP450650, 7 slot output for MP1k0 75W100W150W210W300W

tf slot meaning TF cards or microSD cards are a type of digital memory card used for storing digital data The SD association adopting and rebranding TF cards