Apacer 512GB Micro-SD Class10 V30 Memory Card – 512GB capacity, Class 10, UHS Speed Class 3, Video Speed Class V30. Read speed up to 100 MB/s, write speed up to 80 MB/s. A2 certified for faster app performance. Supports 4K Ultra HD and 3D video recording, high-speed continuous shooting. Durable with waterproof, shockproof, magnet-proof, X-ray-proof, and temperature-proof protection. Limited lifetime warranty.