... computers, mobile phones, MP3, MP4, DVD, CD, U plate and the audio equipment outside put.2. Applicable ... equipment: SD card, U dish3. Rated power: 4 W * 24. Peak ... MP3 format music files.3. Support SD card, U disk file playback.4. Support external MP3 / MP4 ... 5 mm stereo headphones plug, USB interface(card reader)Adjust the volume, form: bass volume knob regulationBass ...