The 128GB SanDisk Extreme Pro microSDXC card, model number SDSQXCD-128G-GN6MA, is a high-performance flash card that caters to professional photographers and videographers. Boasting UHS-I U3 and V30 video speed classes, it guarantees uninterrupted 4K UHD video recording. The A2 app performance class means this card is built to run apps directly from the card with faster loading times. It delivers impressive speed with up to 200MB/s read and 90MB/s write, enabling efficient workflow and quick data transfer. Crafted by WD/SanDisk Retail, it is built to endure harsh conditions, being waterproof, shockproof, temperature-proof, and x-ray proof. This card mirrors SanDisk's commitment to providing storage solutions that can keep up with the demands of high-quality content creation.