Description Feature 1EASY DETECTION: This metal detector can easily detect metal objects up to 4 inch below the surface by simply sweeping it horizontally over the area. The closer the detector is to the metal object, the louder the sound and more strong the signal, which will be displayed on the LCD screen. 2WATERPROOF AND PRECISE: The metal finder features a waterproof high precise coil that can also be used for shallow water detection, making it perfect for beachcombing and underwater. 3FOLDABLE AND ADJUSTABLE: The metal locator can be easily folded and adjusted in length according to the age and height of the user, making it suitable for people of all ages. 4SAFE AND LIGHTWEIGHT: The metal detector is designed to be compact and made of safe ABS plastic, making it perfect for children to use for extended periods of time. 5FUN AND EDUCATIONAL: Giving your child a metal detector will not only cultivate their exploration and curiosity, but also add fun to their daily life and encourage parents to get involved in their growth and development.Item Type: Metal DetectorMaterial: ABSDetection Method: Vibration, sound, vibration and alarmBattery: 1 x 6F22 battery (shipped without battery)Signal Frequency: 3.1KHz1KHzSensitivity: US 25 Cent: 100-120mm .wang-edit-text{ font-family:Arial important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Metal Detector1 x User Manual1 x Accessory