It is for camera users who concern about water-proof capability or digital device users who often use it in water. Protecting from everyday water-related mishaps such as getting soaked. Even the device is damaged beyond repair, your data is secured. The Samsung memory cards are proven with an over 24-hour test in seawater. Portable digital devices can be broken easily by dropping or hitting objects. The device can be repaired, but once memory cards are damaged, its hard to recover the data from them. So, memory cards need to be durable enough to survive any possible impacts. Designed to withstand the weight of a 1.6 ton truck, the Samsung memory cards ill protect your data from daily minor mishaps to hard impact. If the data get damaged without any specific reasons, it is often possible because of the magnetic force such as rom home theater systems. Store your data in peace. The Samsung memory card can resist to a magnetic field of 10.000 gauss, huge magnetic level from MRI.