500Gb on the card I bought. I gotta wonder why it's so "dang" hard to just confirm specs on these types of cards. Usually, I have to search and research for info related to the device capacity. Then I have to search and research for info on the card specs. Class, type, generation, ... its a tricky game. I say game because it's bull. We should be able to readily tell what our devices use, and what the cards provide. Anyway, the card I bought is great. But I honestly almost bought the wrong card at least twice. READ SPECS AND WHAT THEY MEAN. I got real lucky this time. The last card I bought was a different major brand and it had it's own app and everything. It died and put me at a gigantic loss.