Elenco  Metal Detector Soldering Kit with Iron and Solder Hone your DIY soldering techniques on this old school metal detector kit Enjoy the pleasure of having assembled and soldered it yourself Find new money and old treasure When an AM radio is placed near the oscillator; it will emit an audible tone when metal is present Includes: PCB, electronic components, instruction and 25 watt soldering iron, stand and lead free, rosin core solder PCB measures 286mmX445mmX16mm Add this kit to your STEM curriculum From the company that brings you Snap Circuits - 9 volt battery not included