Main Features: 1. Superior sound quality 2. Onboard 2W mono amplifier is connected to the speaker directly 3. 3.5mm gold plated headphone jack can connect with headphone or external audio 4. With a Micro USB port 5. Power supply: 3.7V battery ( not included ) or USB 5V 6. No soldering with speaker terminals for easy wiring 7. The module is designed to facilitate modification 8. Support MP3 format, playing power on automatically 9. Support U disk ( 32G ), TF card ( 16G ) play mode ( U disk and TF card are not included ) 10 Buttons can be adjusted up and down to control songs, volume up and down, pause or play, mode switching
