The all new Garrett AT PRO metal detector is designed for use in wet, humid and dusty environments. Weatherproof housing can be immersed in water to 10-foot depth. Visually indentify a treasure target's conductivity and its discrimination pattern - used with accept/reject notch discrimination. The Garrett AT Pro Metal Detector Includes: 8.5'' x 11'' PROformance™ DD submersible searchcoil (as shown) Premium volume-control land headphones (waterproof headphones sold separately) Highly Recommended - Coin Hunting, Jewelry Hunting, Relic Hunting, Cache Hunting, Prospecting, Ghost Town Hunting, Competition Events, Beach/Fresh Water Hunting This all-terrain detector offers new and Garrett technology that makes it ideal for hunting coins, relics, caches, jewelry, and even gold nuggets. Select from either Standard or Professional search modes with enhanced audio features. AT Pro is Garrett's all-new, all-terrain, all-treasure, deep-seeking, professional treasure hunter's detector! Key Features Pro Mode Audio™: Proportional Audio and Tone Roll Audio™ features allow the user to hear characteristics of a target as they would in a True All-Metal Mode. High-Res Iron Discrimination™: Use touchpads to set iron discrimination in one of 40 levels for precise ability to separate good targets from trash. Digital Target ID: 0 to 99 Target ID scale offers increased ability to distinguish one target's conductivity from another. Iron Audio™: Allows the user to hear discriminated iron and to alter the detector's mid-tone signal's range Fast Recovery Speed: Allows greater ability to pick out good targets amongst trash All Terrain Versatility: Weatherproof housing designed for dusty, humid or wet environments; unit can be submerged to a maximum 10-foot depth.