microSD CS-CMT-CARDT256G, Ezviz

Storage Product Capacity  256GB Speed Speed Class       C10/U3/V10 Max. Read Speed  90MB/s Max. Write Speed  50MB/s Product Compatibility Works with 3rd party products that are compatible with microSDHC,  microSDXC, microSDHC UHS-I and microSDXC UHS-I cards