Delkin eFilm Secure Digital Cards are versatile flash memory that is able to handle a large variety of content, and most importantly prevent against accidental data loss, since it features a built in write protect switch that further ensures the safety of your data. SD cards can be used in mobile phones, PDAs and palmtops, digital cameras and camcorders, audio players, and digital voice recorders. Furthermore, to ensure the highest quality possible, Delkin's memory cards are put through several rigorous quality assurance tests before being released to the consumer.