SanDisk Extreme PRO 4K Ultra HD 400G 400GB 100MB/s Class10 C10 UHS-I U3 V30 A2 MicroSDXC With Adapter for smartphone action cameras drones - Newegg.com
Amazon.com: SanDisk Extreme PRO 128GB Micro SDXC UHS-I U3 A2 V30 170MB/s Memory Card with Adapter. Full HD and 4K Ultra HD Video Recording : Electronics
What's The Difference Between SanDisk Ultra Vs Extreme?
The newest, fastest "app class" microSD cards are still not very good for apps