CompactFlash is the world's smallest removable mass storage device. CF cards are designed with flash technology, a non-volatile storage solution that does not require a battery to retain data indefinitely. CompactFlash storage products are solid state, meaning they contain no moving parts, and provide users with much greater protection of their data than conventional magnetic disk drives. The manufacturer recommends to use this CompactFlash memory with Canon Powershot G1 and Kodak DX3900.