The SDSDRX3-8192-P21 is a robust 8GB SDHC flash card from WD/SanDisk Retail, designed specifically for capturing Extreme HD Video. This card is tailored for enthusiasts and professionals who require reliable and fast storage for high-definition video recordings. With its focus on durability and performance, it is ideal for use in demanding conditions where typical cards might fail. While specifics on speed class are not provided, SanDisk's reputation suggests this card offers fast read/write speeds suitable for HD video, along with the toughness needed for outdoor shoots, extreme sports, and rugged adventures. Its compatibility with SDHC devices ensures that users can rely on it for a wide range of cameras and recording equipment.