Key benefits Flexible multimode playback: USB, TF card, Bluetooth, and radio are supported, giving you options no matter where you are. Simple, intuitive controls: clear longpress and shortpress actions handle volume, track/station navigation, Play/Pause, and mode switching without complicated menus. Fast mode switching: longpress actions let you switch between USB, TF, Bluetooth, and radio modes quickly. Reliable performance: responsive control inputs provide smooth operation for everyday listening. Compatibility and modes Supported modes: USB, TF card, Bluetooth, and radio. Control behavior is designed to work consistently across USB/TF/Bluetooth/radio modes and USB/TF/Bluetooth mode where applicable. Control overview In USB/TF/Bluetooth/radio mode Long press to increase the volume. Short press is the song/ station. PREV/ control Long press to decrease the volume. Short press in USB/TF/Bluetooth/radio mode is the previous song/previous station. In USB/TF/Bluetooth mode Play/Pause: short press for play/pause. Long press for mode switching. What makes it stand out Allinone media control: handle playback from multiple sources with a single, consistent control scheme. Minimalist interface: two key press patterns (short vs long) cover volume, track navigation, playback, and mode changes, reducing the need to learn complex buttons. Quick source access: switch between USB, TF, Bluetooth, and radio without navigating through menus, keeping your focus on listening. Use scenarios In the car with a USB drive or Bluetooth connection: use long presses to adjust volume while driving; use short presses to navigate tracks or stations, and use long press to switch modes when needed. At home or in the office: pair a Bluetooth device and use the short press to play/pause and navigate tracks; switch to USB or TF when you want to use a local drive. On the go: carry a TF card or USB drive and enjoy hands control with simple longpress volume adjustments and quick track changes, then switch modes with a long press as your listening needs change. Notes All actions are performed via followon press patterns described above to provide consistent control across supported modes. This description preserves the original function set: volume control with long presses, track/station navigation with short presses, and mode switching via long presses, across USB/TF/Bluetooth/radio modes.