SanDisk 64GB Extreme PRO UHS-I U3 V30 SD card 200MB/s SDXC Memory card 4K Video | eBay
Amazon.com: SanDisk SDSDQUA-064G-A11 Professional Ultra 64GB MicroSDXC card is custom formatted for high speed, lossless recording! Includes Standard SD Adapter. (UHS-1 Class 10 Certified 30MB/sec) for GoPro HERO4 Black : Electronics
64GB Sandisk Ultra SD/MicroSD Memory Card Class 10 A1 – Adapter Included - OSA Electronics