Metal Detector, Brand: Elenco* basically an oscillator that transmits in the AM radio band. When a radio is placed near the oscillator, it will emit an audible tone when metal is present.
Metal Detector with Soldering Iron and Solder, Brand: Elenco* Includes: PCB, electronic components, instruction and 25 watt soldering iron, stand and lead free, rosin core solder PCB measures 286x445x16mm, Master Dimension (LxWxH): 12 x 9 x 5.5 inch, Master Weight: 5.8lbs
Frightened Grasshopper, Brand: OWI, Features: Solar Panel Output: 1.1V x 50mA,Solar Cell Life, Motor: DC, Power Consumption: 1.2V x 10mA, OWI Solar Kit - Includes Solar Cell!, Master Dimension (LxWxH): 16.5 x 14 x 17.5 inch, Master Weight: 12lbs
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