There"s a lot of history in the ground we walk on ... there"s a lot of treasure, too. The Orbitor Auto Calibrating Digital Metal Detector is your best bet for finding hidden hoards and masked metals. Auto-calibration optimizes the detector"s settings with the touch of a button, giving you maximum discrimination and sensitivity no matter what you"re searching for. Able to uncover ferrous and non-ferrous metals and show you stats in real time on the built-in LCD screen, the Orbitor is a great way to get into the addictive hobby of underground exploration. Requires 6 AA batteries (not included) About National Geographic Licensed National Geographic products are designed to open young minds to the wonder and possibility that surrounds them every day. From microscopes and telescopes to educational resources and media, these products are fun, informative, and approved by the organization whose non-profit mission has not wavered for over 100 years. Buy a gift for a curious kid, and support exploration and research, cultural preservation, education, conservation, and a true sense of awe. * One-touch calibration for maximum results * Easy-to-read backlit LCD screen for tracking search * Shows detection activity, signal strength, and battery * Detects ferrous and non-ferrous materials * Water-resistant search coil for use anywhere