Amazon.com: SanDisk 64GB Micro SDXC Extreme Pro Memory Card Works with DJI Osmo Action Camera (SDSQXCY-064G-GN6MA) Class 10, UHS-1, U3, 4K, Bundle with (1) Everything But Stromboli SD, MicroSD Card Reader :
SanDisk 64GB Extreme PRO microSDXC UHS-I/U3 Class 10 Memory Card with Adapter, Speed Up to 95MB/s (SDSDQXP-064G-G46A) - Newegg.com
SanDisk Extreme PLUS microSDXC Card - 64GB, Class 10, U3, UHS-I | Sweetwater
SanDisk Extreme PRO 64GB SDXC UHS-I Memory Card SDSDXXY-064G-ANCIN - Best Buy