The most fundamental difference between MP3 and MP4 is the type of data they store.
Contrarily to the MP3 player, the MP4 player is also a device that can read and play audio files but can also bear the MPEG format (these are video files that can be played on the device.). Hence, usual MP4s have a little screen on which the user can watch a music video that has been added to the list of files on the MP4.
Besides audio, MP4 files can also contain video, images, and text. You’ll often see various file extensions that give an indication of the type of data within the container. Here are some of the most common:
MP4— The only official extension.
M4A— Non-protected audio.
M4P— Audio encrypted by FairPlay Digital Rights Management.
M4B— Audiobooks and podcasts.
M4V— MPEG-4 Visual bitstreams.
Product Category: MP4
Memory capacity: 8GB
Music play time: 60 hours
Recording time: 150 hours
Storage type: Flash
Memory Card Type: TF card
Video playback : NOT support
Battery: Lithium Battery
Battery capacity: 500mA
Additional features: bluetooth, voice recording, Ebook,watch, FM radio
Screen size: 1.8 inches
Audio playback format: MP3, WMA ,OGG, APE , FLAC
Dimensions: 143mm x 101mm x 8.5mm, Weight: 58g
Appearance material: aluminum-magnesium alloy
Key type: Touch
Display: 1.8 inch TFT color screen, resolution: 126 * 160
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