Feature: 1. Widely used - great for finding metal objects and anywhere metal needs to be detected. You can search for coins, jewelry, gold and silver anywhere. It is also widely used to detect aluminium, copper and rare metals, ground minerals and to search for offensive weapons in crowd control, airports and airfields, checking packages for metallic objects and any metals that need to be detected. 2. The height of the metal detector is adjustable - adjust the length of the detector for comfortable use. 3. Detection indication - LCD analog display and audio to indicate metal detection. 4.. Large LCD display with backlight - identify metal at night or outdoors. 5. Waterproof dial: You can use the metal detector in shallow water. Specifications: Measuring range: 10 cm Power supply: 1 x 9V (6F22 battery) (not included) Frequency: 5.0 kHz Current: Static: 10mA Maximum: 70mA Voltage: 7.2-9.6V Sensitivity: 25 Cent Coin: 130mm Display mode: mechanical pointer mode Package Included: 1 Metal Detector