What useful extra features do MP4 players have compared to MP3 players?
In addition to playing music, most MP4 players can function as external hard drives, allowing you to shuttle files from one PC to another. Some allow you to view text files, photos, and videos on their LCD/ OLED screens. Other convenient features include an FM radio tuner, a built-in microphone for voice recording, a built-in loudspeaker, as well as adapters for patching the player into your car’s audio system.
