Bounty Hunters Challenger Metal Detector is perfect for beginning treasure hunters. The Challenger detects all metals through dirt, rock, wood and mud. Comes with speaker, headphone jack, two-piece adjustable stem, submersible 7 search coil, low-battery indicator and a large screen display that visually helps you see the size and strength of your find. Customize your search with Dual-Tone Discrimination Mode, Sensitivity Level Control, two modes of operation, intensity meter system and automatic ground balance. Made in USA. Batteries: Two 9-volt (not included). Search coil: 7 waterproof coil. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Metal Detectors.