Tesoro Sand Shark is a metal detector designed for underwater research up to 60 meters deep.
It combines PI (Pulse Induction) circuits with digital technologies. PI detectors are the best choice for searching on the shoreline and in salt water, in fact the single coil circuits are not sensitive to changes in the conductivity of the soil derived from the salinity of the soil.
Sand Shark has two distinct modes of operation: VCO and Normal. Using the VCO setting the detection tone will be all the more acute when the object is on the surface, while if the object is deep the detection tone will be weaker. In Normal mode the metal detector emits a single tone for all metals.
Main features
PI technology 600 pps frequency Search VCO motion all metal Adjustable audio threshold Underwater headphones supplied (in blue color) Power supply: 8 1.5V batteries Search plate included: 10.5 "(26.5 cm) concentric User manual in Italian 2 years warranty