The SD Card is a highly secure stamp-sized flash memory card jointly developed by SanDisk, Matsushita Electronic (best known for its Panasonic products) and Toshiba. The security level complies with both current and future portable device requirements. The SD Card can be used in a variety of digital products; digital music players, mobile phones, handheld PCs, digital cameras, digital video camcorders, smart phones, car navigation systems and electronic books. This SD features fast transfer rate for reliable copy/download/backup. Data is not lost when power is turned off.