Support reading MP3 songs on TF card and USB flash drive. Support adjustment of treble, bass and master volume. Support MP3/WAV format. Working voltage: AC 220V or DC 12V-24V. With AUX audio input, you can connect to a computer, mobile phone or CD. Dual microphone input, adjustable reverberation, built-in Bluetooth and FM radio. Rated power: 100W Output power: 100W-300W Suitable for 4-8 ohm speakers with power less than 200W. Weight:0.34kg Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC 220V Battery of remote controller:1 x CR2025 button cell. (Not included batteries) Color:As Shown Material:plastic Package Contents: 1set * digital D10 Bluetooth amplifier boards Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.