Detection Indication: Audio alert and display indicate the detection of metal(3.94in detection depth), once metal is detected there's beep sound and screen light to remind you. Comfortable & Lightweight: Light weight, easy operation, comfortable handling, ergonomic design,high sensitivity,comes with adjustable lightweight bracket. Adjustable Sensitivity & Volume: Easy to control the detector's sensitivity level with sensitive control;adjust the volume level of speaker when searching to find missing or lost coins, pieces of jewellery and other metal objects. Application: Ideal gift for children,this is tailor-made for inexperienced metal finder for cultivating an exciting interest and hobby,can be used in science education, parents-kids activity and simple metal detection. 2.36in Waterproof Search Coil: You can use the in the shallow water with waterproof search coil, it's perfect for kids outdoor use to start a treasure hunting journey.