SanDisk ExtremePro SDXC-II 64GB V90: The SanDisk Extreme PRO SDXC-II memory cards are ideal for super-fast burst shooting, efficient post-production workflows, and cinematic-quality video recording. These high-performance memory cards, with write speeds of up to 260 MB/s and write speeds of up to 300 MB/s, allow you to store up to 256 GB of video footage in 8K, 4K, and Full HD quality. Temperature resistant from -20 to 85°C, waterproof, shockproof, 30-year warranty