Electronic ignition system (piezo electric), sparks produced by a candle (like chainsaw candle) ensuring safety and longevity. Fully zinc plated mechanism for high corrosion resistance. Telescopic gun for adjusting sound intensity. Adjust the frequency of detonations from 3 to 30 min with the regulator valve. Propane supply. Adjustable sound intensity from 80 to 120 dB Supplied with bracket, hose and gas cylinder connection assembly. 1 year warranty.