Discover hidden valuables and possibly uncover clues to the past using the National Geographic Metal Detector. With this easy-to-use device, treasure hunters can unearth coins, jewelry and antique pieces buried up to 6 inches below the surface. The detector uses different tones to identify various precious metals and has a water-resistant base so it can even be used to search puddles and other moist areas. It is height adjustable, has a mounted LED light for twilight searching.