The Sandisk Extreme Pro 300MB/s (U3) SDHC memory card delivers exceptional read speeds of up to 300MB/s for maximum efficiency and write speeds of up to 260MB/s to handle all your camera’s advanced modes. This memory card is optimized for cameras that support the new UHS-II standard, and has a UHS Speed Class 3 Rating, the highest available to support 4K, Full HD, and 3D video recording and advanced camera functions such as continuous burst, rapid shooting, RAW and JPEG capture.