Dual Music Modes: It's both a local Bluetooth mp3 player and a music player, pre-loaded with popular apps like Spotify, Pandora, Tidal, Deezer, and Amazon music.
Robust Local App: The built-in local music app supports multiple formats such as MP3, WAV, FLAC, and offers various song sorting options like Title, Folder, Artist, Album, Genre.
Great AV Experience: Doubles as an MP4 player with a 4" full-touch LCD and HiFi sound, supporting 720p and 1080p HD video playback.
Wide Bluetooth Range: Equipped with a Bluetooth 4.2 chip, compatible with different Bluetooth devices, ensuring fast pairing and stable connections.
Long-Lasting Battery: The 2000mAh lithium battery and low-power design allow 15-25 hours of music (depending on earbuds) or 4-5 hours of video playback.
Ample Storage: Runs on Android OS with an 8-core CPU. It has 2GB RAM,16GB ROM, 80GB storage (expandable to 512GB), and is SDXC/SDHC compatible.
Portable Reading: Comes with Audible and Kindle pre-installed for convenient audiobook listening and e-reading without distractions.
Parental Control: M503Pro restricts additional app installs. You can uninstall unwanted pre-installed apps and set a reset lock for child safety.