This 1GB Secure Digital (SD) Card from SanDisk is a highly secure stamp-sized flash memory card that weighs approximately two grams. It 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. It feature a fast transfer rate for reliable copying, downloading and backup, a high storage capacity and an operating shock rating of 2,0000Gs which is equivalent to a 10-foot drop to the floor. It's non-volatile solid-state with no moving parts, which maximizes battery power and data is not lost when power is turned off. Its low battery consumption maximizes battery life in small portable devices. For security it has a user-selectable mechanical write protect switch on the exterior card casing and its security level complies with both current and future Secure Digital Music Initiative (SDMI) portable device requirements.