Micro SD card is called trans Flash card formerly and a format of removable flash memory cards. The cards are commonly used in cellular phones, as well as in handheld GPS devices, portable media players, digital audio players, expandable USB flash memory drives, Nintendo DS flashcards, and digital cameras.

    Micro SD card is the smallest memory card-15(L)*11(W)*1(H)mm and about a quarter the size of an SD card.