Lexar High-Performance 633x 512GB microSD Card w/ Adapter, UHS-I, C10, U1, A1, Full HD, 4K, Up To 100MB/s Read Memory Card, for Smartphones, Tablets, and Action Cameras

The cards are speed rated at Class 10, and leverage UHS-I technology to deliver a transfer speed up to 100MB/s. These high-capacity cards give you the speed and space you need to capture, transfer, and share more adventures on the go.