Speed Class Rating: Class 10 Read Speed: Up to 30 MB/s read speed; write speed lower Features: SDHC (16 & 32GB), SDXC (64GB) form factor Class 10 performance for Full HD video (1080p) Read speeds up to 30MB/s Writeable label for easy identification and organization Jewel Case to protect your card during storing and archiving Water-proof, temperature proof, X-ray proof, shock proof