... support MP3 play. SpecificationsGuitar Mini Speaker1. Guitar Mini Speaker With TF Slot 2. Stereo sound quality, bass, alto,. ... reach 2.5 hours.6. SD card, MMC card and U disk, support MP3 play. 7. It has ... different interface of the mobile phones and MP38. Have USB interface.9. 4 and 3.5mm interfaces.10. Speaker ... song/next song : both up and down buttons in the Flash disk and TF card to play mode, short ...