It is a micro sd card with an adapter so it can be used in your phone or on your pc. It has 128 gb of storage space for photos, videos, or other files to save memory on your device.
as a new seller if you verify your account even just the phone verification it will increase your bids ALOT, also when replying to people's comments if you look under each comment is a blue reply word in the corner under their comment, if you click that then type your response it will send a message to that person telling them that you answered their question :-) btw phone verification takes MAYBE 2 minutes max, go to verification page on a computer or tablet, enter your phone number into the spot for it, a new screen will pop up with a code, a robot calls your phone number you entered and when it tells you all you do is punch that code into the phone and boom done verified :-)