All Delkin products are manufactured with non-volatile Flash memory, preferred over the conventional form because of its advanced ability retain data over time. Equipped with a write-protection scheme that prevents the accidental overwriting/loss of data, this Flash form is preferred in both complex consumer electronics (PCs, notebooks, PDAs & mobile phones), as well as industrial military & medical applications. Our SecureDigital cards are solid state manufactured with no movable parts to provide ultimate protection for your data files. Our Delkin Pro 163X card must be inserted into an SDHC host device to fully utilize its high-speed capabilities. Delkin Pro memory has been specially ruggedized and optimized for digital photography, video & gaming purposes and tested to perform under extreme environmental conditions between -13F and 158F. With read and write speeds up to 24 MB/s, this advanced memory card is ideal for professionals that are not willing to compromise their digital data. Delkin Devices is fully committed to customer satisfaction, and our memory cards are put through several rigorous quality tests before being released. Any potential difficulties or inquiries regarding your purchase will be dealt with by our US-based customer support system. A team of technicians will gladly recover deleted images completely free of charge and even retrieve files from re-formatted or corrupted cards whenever possible.