Quantity   Component name
1 × 18 AWG Solid Core Wire
1 × Electret Microphone
3 × 10K ohm Resistor
1 × 1K ohm Resistor
1 × 100 ohm Resistor
1 × 9v Battery Clip
1 × 9v Battery
1 × EasyEDA
1 × Plier
1 × Lead-Free Solder Wire Or any other type of solder wire.
1 × Solder Flux Optional.
1 × Soldering Iron
1 × 1/4 inch Bolt
2 × 2N3904 NPN Transistor
1 × 15pF or 40pF Trimmer Capacitor
2 × 100nF Ceramic Capacitor
1 × 10nF Ceramic Capacitor
1 × 4pF Ceramic Capacitor
1 × 1M ohm Resistor
1 × 100K ohm Resistor