The Garrett AT Pro Metal Detector is an all-terrain solution for excellent finds, whether you're treasure-hunting for relics, prospecting, coin shooting, or shallow-water searching. The Garrett weatherproof housing withstands dusty, humid, and wet environments, and the waterproof metal detector can be submerged to 10'. Proportional audio and tone-roll audio allow you to hear target characteristics as you would in true all-metal mode. 40 levels of iron discrimination provide precise separation of good targets from trash. The 0 to 99 target-identification scale increases your ability to distinguish target conductivity. Iron audio feature lets you hear discriminated iron so you can alter the mid-tone signal range. Fast recovery speed enhances your ability to pick out good targets from worthless ones. 15kHz high frequency improves detection of small targets, gold nuggets, and jewelry. The Garrett AT Pro Metal Detector includes land-use headphones and a manual. Adjustable from 42" to 51". 21.4"L x 5.8"H x 14.3"W. 3.03 lbs. (including batteries). Mfrs. 3-yr. parts and labor warranty.Manufacturer model #: 1140460. Superior performance in a variety of environments Weatherproof, submersible housing 15kHz frequency Able to detect small and high-value targets others miss Fast recovery speed 40-level iron discrimination helps sort trash from treasure Improved audio for clear target ID signals