Model Number:VTF-MC03 Compatible Audio & Video Equipment Style:Speakers,Amplifier,player,Digital-to-Analog Converter (),Professional Audio Equipment,Stage Equipment Power Output:2x30W Note:1.The higher the voltage, the louder the sound. Please give up this misconception. Only the right power supply and the right speakers can produce perfect sound. 2.The power supply and speakers determine the output power of the amplifier. 3.Our power amplifier input generally requires 1.5V-2V. If your decoding output is 30mV-1V, that is not enough. Even if your power supply and speaker are adapted, the power amplifier output cannot reach 2x30W. 4.The product needs to be assembled by yourself. Colour:Black Material:ABS Size:9x6.1x2.9CM(WxHxD) Package Contents: 1 x Bluetooth Audio Amplifier Module 1 x Screwdriver 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.