I'm still stuck 10 years ago when microSD cards were fairly new. They were and still are neat - its amazing at how much you can put on something that is literally the size of a fingernail! I purchased this Class 10 64Gig exclusively for use with myGoPro HERO3: Black Editionso that the card can keep up when the camera is recording HD at 60fps. Its amazing how many people aren't aware of the classes of these data cards and how it can affect performance and capturing of video and even stills. If you have tried capturing video only for it to shut off automatically, it may be because your memory isn't fast enough to keep up. But you'll have no problems keeping up with this card nor should you have problems storing it all! This SanDisk memory often gets labeled "the best of the cheap memory" but I'm unsure how the expensive, poor memory does - why would anyone buy anything else more expensive?! This is the card to get! It's so good, I've also purchase two 32Gig cards for our Samsung S4's!