Sony 64 MB MagicGate Memory Stick (MSG64A) Here's a vast, microscopically contained world for music and data, designed for the NWMS9 and other Sony digital music players, as specified Also useable in various Sony notebook computers and a continuously expanding line of Sony digital products Fits in any Memory Stick slot Includes MagicGate copywright protection technology for both copyright-protected content and personal content and data Compact size and durability make it the perfect solution for portable storage