ADATA 64GB High Endurance microSDXC UHS-I U3 / Class 10 V30 A2 Memory Card with SD Adapter, Speed Up to 100MB/s (AUSDX64GUI3V30SHA2-RA1) - Newegg.com
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
EVO Plus microSDXC Memory Card 64GB Memory & Storage - MB-MC64HA/AM | Samsung US