Delkin microSD Memory Cards
Recommended by GoPro for the HERO3 Camera
" Action Camera & Smart Phone Approved
" Supports HD, 3D & 4K Video
" Time-lapse & Continuous JPEG Ready
" 375X, up to 56MB/s Read & 40MB/s Write
" UHS-I / Class 10 Rated
" Available in 4GB, 8GB, 16GB, 32GB & 64GB
" Listed & Recommended by GoPro
Here's what GoPro says.....
"SD Card Recommendations
It's important to use one of the recommended SD cards in your camera, or you may experience freeze-up or video corruption issues.
We recommend only purchasing name brand SD cards through reputable resellers. There are both counterfeit and underperforming SD cards out in the marketplace, which can prevent proper functioning of your HD HERO camera's features.
HERO3: Black Edition Camera
oA Class 10 MicroSD card up to 64 GB is required.
Not all Class 10 microSD cards have the same data write speeds. If you plan to shoot in 4k, 2.7k, or Protune video modes with your HERO3: Black Edition camera, we recommend using the following microSD cards for the best performance:
*Delkin 32GB SDHC (DDMICROSDPRO2-32GB)
*Delkin 64GB SDXC (DDMICROSDPRO264GB)
With the camera software update released July 29, 2013, using other microSD cards with your HERO3: Black Edition camera while shooting in 4K, 2.7K and Protune video modes may result in a reduction of the data stream rate from 45Mb/sec to 35Mb/sec."