Handheld Underwater Waterproof Metal DetectorHandheld Underwater Waterproof Metal Detector Fulfill your dreams of becoming a treasure hunter by searching the waters for precious metals with the help of our underwater metal detector. Our waterproof metal detector is equipped with a powerful sensor that can detect metals under sand, rock, and coral. Despite its compact design, the metal detector for underwater has a high resistance to water pressure. It is tough enough to keep functioning even if