Kingdetector MD-4030 Pro Edition Hobby Explorer Waterproof Search Coil with shovel Metal Detectors The advantage: Using the new technology. It is widely applied ti detect underground metal objects. It is one of the most convenient and most sensitive metal detector. You deserve to have one. Applications: Detecting metal objects buried underground. Widely used in security check, treasure hunting, material check etc.. Features: Two Operation Modes: All Metal, DiscVolume - To adjust the volume level of speaker and headphone Details: Earphone Jack - Lets you connect headphones (not supplied) to the detector;View Meter and Pointer - The meter pointer swings to the right if metal is found.If you would like to see more details, please refer to our social video website. Package list: Kingdetector MD-4030 metal detector, shovel, camouflage bag, headphones, welcome guide. We promise that you can enjoy our worry-free 12-month warranty and friendly customer service.