UHS Speed Class 3 (U3), Video Speed Class 30 (V30): Optimized for 4K FULL HD (3840x2160p) video recording and playback.
A1 APP performances: Optimized for android apps (6.0 OS and higher), delivering faster app lauch and performances.
Up to 85MB/s* write speed: Ideal for continuous high speed shootings , 4K recording and fast download of multimedia files onto your mobile device.
Up to 100MB/s read speed: For super fast transfer of high resolution pictures and 4K videos as well as larger media files onto microSD compatible devices or SD compatible devices using the provided SD adapter.