The 8GB, 16GB, 32GB SDHC Card are all Class 10, supporting very large high-def video recordings, high-def still photography, Backwards compatible to lower classes. Shock-proof, designed to meet Military Standards for shock, vibration and impact (MIL-STD-810G). Magnetic resistant, with protection to precision watch standards (ISO 764). Waterproof (up to 30 minutes at 8 feet, which meets international standards IPX8 and JIS 8) and temperature resistant (from –13 to +185 degrees F, -25 to +85 C).