Product Specifications: 1. Power supply: 1 x 9 V (6F22) 2. Frequency: 5.0 kHz 3. Current: Static: 10 mA Maximum: 70mA 4. Voltage: 7.2-9.6V 5. Sensitivity: US 25 cents: 130mm 6. Display mode: mechanical pointer mode 1. Widely Used - Perfect for finding metal objects and anywhere hidden metal needs to be detected. Adjustable Sensitivity - Easily control the sensitivity of the detector with sensitive control. 2.Reasonable Design- Designed to avoid metal to find - Search gold and silver jewelry, coins and other metal (iron nail, iron cover, aluminum ring, small aluminum product, coins, gold, bronze, silver) in the ground. Easy-to-use Operation - This metal detector is tailor-made for novice metal finders and suitable for children. 3.Adjustable Volume- Adjust the volume of the speaker when searching for missing or lost coins, jewelry and other metal objects. Application: Searching for coins, silver and gold, detecting all kinds of metal, science education, parents and children activity, simple metal detection 4.Detection Indicator- Audio alarm and LCD display indicate metal detection. Waterproof Search Coil - You can use the metal detector in shallow water with a waterproof search coil. Only one 9V battery is required to operate the product. If it stops working for a long time, please remove the battery. 5.Great Gift- The small metal detector for kids would be a great gift on birthday, Christmas or any special day you make a surprise would like. Everyone has a treasure hunt dream, whether theyre a kid or an adult.