Underground Metal Detector: This product boasts high sensitivity and stability. It uses a frequency tuner to identify target metal types, preventing interference from other metals and easily locating target metal objects. Please note that this product is not waterproof; do not immerse the detector in water. Detection Depth: Detection range up to 99 meters, underground detection depth up to 16 meters. This underground metal detector can be used to explore more locations, searching for treasures with high metal content such as gold, silver, copper, and gemstones—metals that are undetectable by other metals. Efficiency: This underground metal detector uses a microelectronic processor control chip unit for calibration and an instrument self-testing system, enabling easy and rapid scanning and testing, thus improving treasure hunting efficiency. (To extend its lifespan, please charge after turning off the device. A full charge provides 10 hours of operation.) Specific Frequency Detection: This metal detector can accurately determine and locate the buried position of objects. It can identify specific types of metals through a frequency tuner and is equipped with a remote search system and a precise positioning system. Applications: This underground gold detector, made of ABS material, can be used to explore more locations to find treasures. This product needs to be used in open and interfering environments and is not suitable for indoor use. Indoor interference factors, such as mobile phones and electromagnetic field devices, may interfere with the detector, leading to inaccurate detection.