Multiple playback options The MP3 module supports both disks and TF cards, enabling you to store and play audio files with up to 16 GB on TF cards and 32 GB on disks. This flexibility lets you choose the storage method that fits your setup. Automatic mode switching For convenience, the device automatically switches from TF card mode to disk mode if no card is detected when it powers on. This provides a smooth listening experience without manual selection. Userfriendly controls A simple button layout allows you to easily switch tracks, adjust volume, and pause or play audio to fit your listening needs. The control interface is designed for straightforward, everyday use. LED status indicator A red LED provides realtime playback status, so you can monitor operation at a glance without checking the device directly. Use scenarios Car audio or DIY head unit: Use the module to play playlists from TF cards or disks, enabling flexible incar music options. Small home or office speaker systems: Integrate the module into a compact speaker setup to deliver convenient MP3 playback from multiple storage media. DIY projects and prototypes: Add reliable audio playback with simple controls and an easily visible status indicator for quick testing and deployment.