CompactFlash is the world's most popular removable mass storage device. It is designed to be conveniently small enough to fit easily in your pocket, protected from shock and vibration by rigorous pressure, shock and vibration testing during manufacturing, and can operate in virtually any climate, with an operating temperature range of -25 to 75 degrees Celsius, in addition to offering excellent performance Fast speeds and high transfer rates for fast copy/download operations. Designed for professional photographers and videographers to record and capture cinema-quality 4K and Full HD video. The perfect choice for photography and videography enthusiasts.