Coil Thunder is the latest development that combines high levels of detection depth and selectivity. Working with a slow swing will maximise its ability in finding not only large and medium targets but small targets which weigh less than 1g at 20 cm deep as well. The Thunder coil is suited for finding coins, treasures and artifacts in the field of military battles in any territory. The coil is fully submersible, body is filled with epoxy resin and additionally has a black protective coating that is used for the protection of marine boats, and it makes it possible to use the coil without coil cover. The coil copes excellently with high and medium soil salinity. Recommended for professionals.