Features: brand new and high quality Automatic tuning, the pulses of vibration increase in frequency as the probe tip approaches the tar-get precision pinpointing. Our underwater metal detector is waterproof to a depth of 100 feet, it can be used in almost any environment, including for fresh or saltwater. The stainless steel hardware is built to last and a build-in low battery sensor is safe. The art handheld pinpointer metal detector that incorporates Pulse Induction (PI) technology, which allows you to hunt metal in water, on land or in any type of soil. Diving searching, Public security check, for Police detecting, Professional archaeology, Pinpointing decoration line,etc. When metal is detected, it shows the strength of the signal according to the size of the metal. Specifications: Material: ABS Size: 43.5cm/17.13 in Tuning: Automatic Detection modes: Audio and Vibration, Audio,Vibration Control: Power switch Display:LCD Coil diameter:12cm/4.7 in Main feature: Waterproof Waterproof depth:35 meters/115Feet Package Includes: 1X Metal Detector note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.