The Lexar Professional CFexpress Type B Card lets you shoot more high-quality images and RAW 4K video. Designed to leverage the capabilities of next-generation cinema cameras and high-resolution DSLRs, the Lexar Professional CFexpress Type B card allows you to capture breathtaking high-quality images and extended lengths of RAW 4K video. It features blazing speeds of up to 1750MB/s read1, and up to 1000MB/s write. Capture Adventure with Ultimate Durability Whether you're chasing sunsets or road races—or any other adventure, the Lexar Professional CFexpress Type B card delivers the rugged durability you need to protect from shock/vibration. You have the peace of mind that you've got a card you can trust to capture breathtaking images. Save Time with Dramatically Accelerated Workflow The high-speed performance of the card allows you to shoot and transfer files quickly. When used with the Lexar Professional CFexpress Type B Reader, you'll maximize the read transfer speed capability of the card. This dramatically accelerates your workflow from start to finish, so you can save time and get back to business. Backward-Compatible with XQD Cameras For versatility, the card is backward compatible with select XQD cameras enabling existing devices with next-generation performance. Rigorously Tested All Lexar product designs undergo extensive testing in the Lexar Quality Labs, facilities with more than 1,100 digital devices, to ensure performance, quality, compatibility, and reliability.