From Amazon
Integral 256GB Micro SD Card 4K Video Premium High Speed Memory Card SDXC Up to 100MB s Read and 50MB s Write speed V30 C10 U3 UHS-I A1
Gadcet
Integral 256GB Micro SD Card 4K Video Premium High Speed Memory Card SDXC Up to 100MB s Read and 50MB s Write speed V30 C10 U3 UHS-I A1, New