Two Pack Arcanite 256 GB uhs-I Cards NIB

2 MicroSDXC Memory Cards UHS-I U3, A1, V30, 4K, C10, Micro SD - AKV30A1 Interface : Micro SDXC Memory Card w/SD Adapter. UHS-1 U3, A1, V30, 4K Ultra HD, Class 10,Cameras,Tablets,Smartphones&other devices.waterproof, shockproof, x-ray proof, temperature resistant Speeds : Read Speed up to 90mb/s. Actual transfer speeds will depend on operation environment, computer equipment and other factors Recommended Use-Storing documents, pics, videos System Compatibility:Devices that support MicroSDXC Cards