Product information:DIY Electronic Kit LM386 Super Mini Audio Amplifier DIY Kit Suite Trousse LM386 Amplificador Module Board 3.5mm 3-12V UnsolderedWorking voltage : 3.5-12VThis is an Electronic DIY KIT , some soldering experience is required. Package Listing:PCB x110K variable resistor x1Potentiometer knob housing x1Pin 6-pin1K resistor x110 ohm x1104 ceramic capacitors x2DIP8 IC socket x1LM386 x1DC005 Block x13MM LED x110UF Capacitance x1100UF Capacitor x11000UF capacitor x13.5 Audio Block x1