Support reading MP3 songs in TF card and U disk Support independent adjustment of treble, bass and master volume Working Voltage: AC 220V or DC 12~24V With AUX Audio input, can be connected to the computer, mobile phone or CD player Digital power amplifier, peak power 100W, can drive 4Ohm 100 magnetic speakers Dual microphone input, adjustable reverb; built-in Bluetooth wireless Receiver and FM radio