Ultra-speed: up to 250MB/s write and 300MB/s read real-world speeds for the most advanced use cases of professional content creators including high burst image sequence RAW photography and high bitrate 4K and 6K video recording Dependable: delivers 90MB/s minimum sustained write speed Proven: extended time tested in highest settings of high-end cameras Tough: bend/shock/X-ray resistant and IP67 dust-proof and waterproof Supportive: fully compatible with a wide variety of DSLR and mirrorless cameras Flexible: backwards compatible with previous generation of SD devices and readers.