Premier Pro Series SDXC memory cards meet the latest SD 3.0 specification for Ultra High Speed (UHS-I) transfer, with read / write speeds up to 95 and 45 MB per second. The high-speed read and write optimizes work for professional photographers, and allows for the enjoyment of full burst mode shooting. This solid, high efficiency, reliable and durable memory card is meets the stringent demands of professional photographers, and those who just love high-speed photography.