The SD Card is a highly secure stamp-sized flash memory card. Jointly developed by Matsushita Electronic (best known for its Panasonic brand name products), SanDisk and Toshiba, the SD Card weighs approximately two grams. The SD Card can be used in a variety of digital products; digital music players, cellular phones, handheld PCs (HPCs), digital cameras, digital video camcorders, smart phones, car navigation systems and electronic books. Advanced Features available is Cryptographic security for copyrighted data based on proven security concepts from DVD audio. It has High transfer rate for fast copy/download, High storage capacity. Non-volatile solid-state; no moving parts maximizes battery power. Data is not lost when power is turned off. Low battery consumption to maximize battery life in small portable devices. User selectable mechanical write protect switch on the exterior card casing. New devices with SD Card slots will accept existing Multimedia Cards. Operating shock rating of 2,000Gs, equivalent to a 10-foot drop to the floor. Security level complies with both current and future Secure Digital Music Initiative (SDMI) portable device requirements.