Lexar Original 64GB Memory Card. A high-performance memory card, designed to withstand continuous recording pressure and ultra-fast data transfer. Best uses: Dash Cams: The perfect choice to withstand continuous recording and support 4K recording with clarity and without interruption. Surveillance and Action Cameras: Accurate and continuous recording that withstands harsh working conditions. Smartphones: Fast app response thanks to A1 rating. Technical Specifications: Capacity: 64GB. Speed: Read up to 100MB/s for fast file transfer. Rating: U3, V30, A1 (certified performance for 4K recording). Price: 79