GT6100 Adjustable Metal Detector Underground Digital Display Waterproof Gold Silver Jewelry Treasure Hunter Metal Finders Seeker Black   Description:    With a metal detector, you can look for coins, artifacts, jewelry, gold and silver in almost any place (including lawns, snow, mountains, etc.).   The detector has high sensitivity and strong recognition ability. It is versatile and easy to use.      Feature:    1. Two operation modes: All metal and disc.   2. All metal: Lets you search for all different types of metals with auto ground balance and high sensitivity. It's the best operation mode.   3. Disc: Discriminates what kinds of metal is being detected.   4. Earphone jack: Lets you connect headphones to the detector.   5. View meter and pointer: The meter pointer swings to the right if metal is found.   6. Waterproof search coil: Lets you search for metal objects under shallow water.   7. Adjustable stem: Lets you adjust the detector's length.      Specification:    Material: ABS + metal   Colour: Black   Battery: 2 * 9V battery (not included)   Mode: All metal, disc   Detection depth: 180mm/7.09in (test coin: US 25 Cent)   Headphone jack: 3.5mm / 0.1in   Search coil diameter: 203mm / 8.0in   Control unit size: 135 * 121 * 72mm / 5.3 * 4.8 * 2.8in