Brand new and high quality Features: LCD Display Supports music playback from U-disk/SD card (not included) Supports left and right channel audio output. AUX external signal input. Battery monitoring. FM radio antenna interface. Microphone recording port. Operation buttons and remote control for the main interface. Master volume encoder interface. Supports memory cards: up to 32GB (not included) Power: 5V Supported formats: APE, FLAC, WMA, WAV, MP3, etc. Button Instructions: 1. USB/SD Mode: Short press for play/pause button / FM Radio Mode: Short press for auto-search. 2. BT / USB / SD Mode: Short press for previous song, long press for volume down. / FM Radio Mode: Short press for previous, long press for volume down. / AUX Mode: Long press for volume down. 3. USB / SD Mode: Short press for +10 function. 4. BT / USB / SD Mode: Short press for next song, long press for volume up / FM Radio Mode: Short press for next, long press for volume up / AUX Mode: Long press for volume up. 5. REC Recording Button: Press and hold this button during USB/SD operation to record audio from the MIC port. Recording length depends on the capacity of the U-disk or SD card used. Play music from the U-disk with the recording file. Short press this button to quickly switch to the recording file for playback, allowing users to quickly find the recording file. (In AUX, USB/SD, FM working modes, if a device like a U-disk and SD is connected, press and hold the REC button for 2 seconds to start recording. Short press the REC button during recording to end recording and play the recorded content. If listening to music in U/SD, you can quickly press the recording button to quickly switch to the recording file. If you want to listen to the current recording file, press and hold the MODE button for 2 seconds to play the recording file. REC recording file, please be sure to confirm the content you want to delete.) 6. USB/SD starts with default full loop playback. Press this button to switch to single loop playback. 7. MODE Button: Short press to switch between AUX/USB/SD/BT/FM modes. / When playing a recording file, press this button to delete the currently playing recording file. 8. EQ Button: Short press this button to switch between 5 EQ sound effects when playing USB/SD music. Specifications: Power: 5V Supports memory cards: up to 32GB (not included) Supported formats: APE, FLAC, WMA, WAV, MP3, etc. Color: As the picture Size: As the picture Quantity: 1 Set Notes: 1. Please allow 0-1 cm error due to manual measurement. Make sure you don't mind before bidding. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1x MP3 Decoder Board 1x Remote Control (without battery)