16GB Micro SD is a memory card that comes in different sizes, and can be bought at retail and online stores. Digital cameras, media players, cell phones, audio players, USB flash memory drives utilize SD cards for storage purposes. SD memory cards are small, and because they are so tiny, they are used predominantly in digital products. Micro SD cards were first invented by SanDisk, yet today, there are many companies providing these cards. You can use the Internet to find many websites that offer this type of memory card. It is necessary to ascertain whether or not the card you are buying will be supported by your electronic gadget. Some gadgets are specifically manufactured to use some forms of micro SD cards. Instead of MiniSD cards, micro sd cards are the industry standard today and are preferred by mobile phone companies.