High Sensitive: Metal Detector adopts the advanced features and class-leading performance, it will emit "beep and dig" sounds when it reach the metal objects, ensure you can easily to find the metal objects. Three Modes: Underground Metal Detector comes with three modes: DISC, ALL METAL and PINPOINT, different modes for different types of magnetic and conductive metals, like coins, relics, jewellery, gold and silver. Discrimination Function: Smartly discriminates the metal type or the unwanted units with 3 different tones under DISC Mode, more precise and more smart Water Resistance and Adjustable Stem: The stem and coil at the end of the metal detector are waterproof and adjustable, you can adjust the detector's length for comfortable use(Max:108cm/42.5in; Min:78cm/30.7in), can be used for both kids and Adults. Headphone Jack and Adjustable Volume: The Metal Detector has 3.5mm universal headphone jack, you can connect different headphone(Not Included) with the Metal Detector and adjust volume to fit for different environments., Manufacturer: CFWWSAQ