What kind of micro sd cards are compatible with the Samsung Blackjack 2?

I was just wondering if there are specific micro sd cards that are compatible with the samsung blackjack 2 because i was watching the phonescoop video (a href="http://www.phonescoop.com/articles/article.php?a=179)" rel="nofollow"http://www.phonescoop.com/articles/artic…/a and the guy was having trouble with the micro sd card.