The SanDisk Extreme Pro SDCFE-128G-GN4IN is a high performance, 128GB CFexpress B type memory card that provides superior speeds and reliability. It has a read speed of 1.7GB/s, making it ideal for shooting high-resolution images and videos and transferring large files quickly. Additionally, it is resistant to shock, vibration, temperature changes, and even X-rays. With its high-performance and dependability, this SanDisk Extreme Pro memory card is a perfect choice for professionals and enthusiasts alike.