Verbatim 32GB Pro Plus 600X microSDHC Memory Card with Adapter, UHS-I V30 U3 Class 10 V30 video speed class supports 4K video recording UHS-I Interface, U3 speed rated Up to 90MB/s read speed and 80MB/s write speed Water resistant, shock proof and temperature proof Verbatim has been a leader in data storage technology since 1969, and guarantees this product with a limited lifetime warranty and technical support