Key Features of the SanDisk Ultra 32GB Class 10 100MB/s SDHC UHS-I Memory Card 32GB Class 10/UHS-I Max storage capacity. Writing Speed: 100 MB/s Min. 10 MB/s is the speed. Temperature, Water, X-ray, and Shock Proof Specifications of the Integrated Write Protect Switch Keeping Capacity Class 10 Bus Interface Speed: 32 GB Class I Data Transfer for UHS 100 MB/s is the read speed. Maximum Sturdiness Waterproof, X-Ray Proof, Shockproof, Magnet-Proof, and Temperature Extreme Proof -13 to 185°F/-25 to 85°C for operation; -40 to 185°F/-40 to 85°C for storage Yes, there is a built-in write-protect switch in the box. Memory Card x1 SanDisk Ultra 32GB Class 10 100MB/s SDHC UHS-I