Tesoro Sand Shark

The Sand Shark was Tesoro's pulse induction underwater machine, and it did the job PI machines exist to do: hunt salt water and black sand without the falsing that stops a VLF in its tracks. Rated for submersion, simple to run, and with a pulse width control that let you tune sensitivity to small gold. Beach and water hunters bought them and kept them, and there is very little in the current market that replaces one directly at the price.