1. Decode: MP3/WAV format 2. Sigmatel 3502 controller USB 2.0 Full speed 3. Built-in 32MB/64MB/128MB/256MB/512MB/1GB Flash memory with portable USB storage function 4. Support Disk partitions and password check for security disk function 5. Mass Storage Device class compatible so no driver needed in Windows ME, 2000, XP, Mac 9.1 or later. Includes manufacturer driver for Windows 98.