Underground Metal Detector 2 Working Methods Adjustable Waterproof Metal Locator with Shovel Earphone Item Type: Underground Metal Detector Material: ABS, aluminum alloy Power: 2 x 6F22 9V alkaline batteries (shipped without batteries) Frequency: 5.0 KHz Static Current: 10mA Maximum Current: 70mA Voltage: 7.2-9.6V Sensitivity: US 25 Cent: Approx. 130mm / 5.12in Display Mode: Mechanical Pointer Mode, Sound Mode Retractable Length: Approx. 30.7-42.1in / 78-107cm Detection Disc Diameter: Approx. 6.5in / 16.5cm Color: Black Headphone Jack: 3.5mm Waterproof Detector Plate: Can be used in shallow water where the metal detector Volume Adjustment: Adjust the volume of the speaker and headphones Two Operation Modes: All metal mode, identification mode Detection Object: Metal (nails, iron, aluminum rings, small aluminum products, coins, gold, bronze, silver) Applications: Gold detection, desert detection, security inspection, archaeology, treasure hunting, beach detection