Whether youre hunting treasures and relics, prospecting, coin shooting or shallow-water searching, Garretts AT Max Metal Detector is built to perform in rough and wet environments. Weatherproof housing withstands dusty, humid, saltwater and freshwater environments, and it can even be submerged to a depth of 10 ft. Integrated Z-Lynk technology offers a wireless signal that the included MS-3 wireless headphones link into for more freedom while detecting. The AT Max boasts enhanced detection depth, true all-metal mode, Iron Audio modes and All Metal Iron Audio. Proportional audio and tone-roll audio allow you to hear target characteristics as you would in true all-metal mode. 44 levels of iron discrimination provide precise separation of good targets from trash. Eight levels of sensitivity/depth adjustments. The DD PROformance search coil features electronic pinpointing. Fast recovery speed and a target-depth indicator help to quickly locate good targets. Four Pro Audio search modes and three audio tone I.D. levels. 13.6kHz high frequency improves detection of small targets, gold nuggets and jewelry. Battery-level indicator. Manufacturers two-year limited warranty. Batteries: 4 AA (not included). Application: Coin, jewelry, relic. Length: 43 to 56. Search coil: 8.5 x 11 concentric. Frequency: 13.6khz. Wt:3.03 lbs. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Color: Gold. Type: Metal Detectors.