But it's gets worse than that. Some devices will go much slower when you put a class card that is beyond its capability. Be sure your device notes Class 6 support or you may pay for speed and notice it's not so hot.
What is the difference between a Class 4 and Class 6 card if the capacity is the same, in this case 4GB?
Do you know what an OLED TV is?
CNET explains how OLED technology differs from regular TVs, and what you need to know to make the right shopping decision.