Product Description. Lexar's 256 GB High-Performance 800x PRO UHS-I SDXC Memory Card (BLUE Series) is designed for point-and-shoot cameras, mid-range DSLR cameras, and HD camcorders. It offers 128GB storage capacity and uses the UHS-I bus for quick 4K, Full HD, 3D video captures. With maximum read speeds of 150 MB/s and write speeds of 45 MB/s, it ensures minimum write speeds don't drop below 30 MB/s. The card is resistant to water, shock, vibration, and x-rays, and can withstand temperatures ranging from 32 to 158°F. Its 10-year warranty covers any compromised card. Product Highlights. Durable and tough. - Rigorously tested, and designed to be water, temperature, shock, vibration and X-ray proof. 4k UHD. Accelerates Workflow. High-Temperature Tolerant. High Transfer Speed. Product Specifications. Capacity. 128GB. Performance. 256 GB - read speed up to 120MB/s, write speed up to 45MB/s. Operating Temperature. 0° ~ 70° C (32°F ~ 158°F). Storage Temperature. -25° ~ 85° C (-13°F ~ 185°F). Dimension (L x W x H). 32mm x 24mm x 2.1mm / 1.25” x 0.95” x 0.08”. Warranty. 10-year limited warranty. Speed Class. 128GB - Class 10, U3, V30.