Auto Tune Metal Detector 18 cm Search Depth with Pinpoint 375720Our powerful metal detector is designed to locate metals like iron, silver, copper, etc. in various ground types with great accuracy. Powerful function: The pinpoint function allows the users to target the metal in different ground types with great accuracy. It could detect coin sized objects up to 18 cm deep. The search coil is waterproof, so you can detect objects in shallow water. Nice equipment: The installed loudspeaker provides you with fast