Multiple Playback Options - Supports tf cards up to 16 GB and disks up to 32 GB for music storage. Provides ample local space for your favorites. Automatic Mode Switching - On startup the module defaults to tf card mode. If no tf card is detected, it automatically switches to disk mode for uninterrupted listening. User-Friendly Controls - Intuitive button layout allows you to switch tracks, adjust volume, and play/pause with ease for a straightforward listening experience. LED Status Indicator - Built-in red LED signals the module’s operation, enabling quick status checks without active interaction. Use scenarios - Car audio system: store a tf card or usb disk with your music to enjoy seamless playback on startup and convenient control from the vehicle’s dashboard. - Home DIY speaker setup: integrate with a small home stereo or bookshelf speaker for local music playback without relying on internet connections. - Workshop or classroom radio: use local storage to provide background music or announcements, with clear status indication and simple control.