Designed for high-definition imaging and high-performance devices, the U3 V30 A1 SD Memory Card supports U3 transfer standards and V30 Video Speed Class for stable 4K video recording, burst photography, and large file transfers. Compliant with A1 Application Performance Class, it improves random read/write performance for faster data access and smoother device operation. Featuring premium Flash memory chips, it delivers reliable performance, durability, and broad compatibility for digital cameras, camcorders, drones, action cameras, and professional imaging devices