Designed for high-definition video recording and mobile applications, the U3 V30 A1 Micro SD Memory Card supports U3 Speed Class and V30 Video Speed Class, providing stable performance for 4K video recording, action cameras, and high-resolution image storage. Compliant with A1 Application Performance Class, it optimizes random read/write performance to improve app loading speed and data access efficiency. Featuring premium Flash memory chips, it delivers reliable performance, durability, and broad compatibility for action cameras, drones, smartphones, gaming devices, and other mobile terminals