Capture 4K Ultra HD and Full HD videos and enjoy transfer speeds of up to 100MB/s so you can shoot like a pro and still experience world-class responsiveness from your phone. Class 10, UHS-I Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings mean your videos can meet today's highest resolution standards.

Capture 4K Ultra HD and Full HD videos and enjoy transfer speeds of up to 100MB/s so you can shoot like a pro and still experience world-class responsiveness from your phone. Class 10, UHS-I Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings mean your videos can meet today's highest resolution standards.

Capture 4K Ultra HD and Full HD videos and enjoy transfer speeds of up to 100MB/s so you can shoot like a pro and still experience world-class responsiveness from your phone. Class 10, UHS-I Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings mean your videos can meet today's highest resolution standards.

The Extreme Pro UHS-II U3 64GB microSDXC card brings the latest UHS-II interface to the microSD format, offering up to 275MB/s read speed according to SanDisk. The card is rated U3 for at least 30MB/s continuous recording of HD and 4K video. Extreme Pro UHS-II micro SD cards are offered in 64 and 128GB capacities. The 64GB microSDXC card is tested in this review.

This super compact-sized card unleashes your compatible action camera or smart device’s full shooting potential with a complementary Ultra High Speed (UHS) Speed Class II (U3) delivering ultra-fast performance to meet the demanding requirements of Ultra HD 4K video recording and playback. The large storage space enables uninterrupted recording or high speed shooting for longer periods of time.