Features 1、Widely Use: Ideal for finding metal objects and anywhere that metal needs to be detected. 2、Designed to Find Metal: Search gold and silver jewelry, and other metal in the ground. 3、Adjustable Height of Metal Detector: Adjust the detector's length for comfortable use. 4、Detection Indication: Audio alert and pointer indicate the detection of metal. 5、Headphone Jack: Provided for headphone connection. Both stereo or mono headphone can be used. 6、Volume Control: Adjust the output volume of the loud speaker or headphone. 7、Water Proof Search Coil: You can use the metal detector in the shallow water. Specification Specifications: Color: Black Material: ABS Plastic + Aluminum Sensitivity: Min. 130mm / 5.12" (Test Coin: US Φ 25) Detect Objects: Metal(Iron nail, iron covering, aluminum ring, small aluminum product,gold, bronze, silver) Detection Mode: All Metal, Discrimination Operating Frequency: 5KHZ Power Supply: 2 x 6F22 9V Batteries (Not Included) Operating Current: Standby 10mA(LCD with backlit color 80mA) Maximum 70mA(LCD with backlit color 150mA) Operating Voltage Range: 9V Detection Indication: Mechanical Pointer Mode, Audio Mode Control: Power Switch Sensitivity: Adjustable Volume: Adjustable Adjustable Height of Detector: 78-107cm / 30.71-42.12inch Application: Testing metal foreign body of materials, fuel and food, Detection of underground pipeline & line, Archaeology, Exploration, Found buried treasures of gold, silver and metal artifacts, The acquisition of scrap metal industry, Customs and safety inspection, Detection of interpol search, Checking metal foreign bodies in express delivery and luggage. Operating Temperature: -15～45℃ / 5～113℉ Storage Temperature: -20～60℃ / -4～140℉ Item Size: 107 * 27 * 16.5cm / 42.12 * 10.63 * 6.50in Item Weight: 862g / 1.90 lb Package Size: 54 * 22 * 11cm / 21.26 * 8.66 * 4.33in Package Weight: 1.28kg / 2.83 lb Package List 1 * Metal Detector Main Unit 1 * Armrest 1 * Connecting Rod 1 * Search Coil 1 * Search Coil Knob 1 * Headphones 1 * User Manual