Features [METAL DETECTION] The handheld metal detector is designed to accurately locate metal (black and non ferrous metal) objects, which is convenient and practical. [ALARM MODES] The metal detector has sound light and vibration alarm to indicate the metal objects, with 5.9 inch coil, which can easily detect tiny metal. [IP68 WATERPROOF] The underwater metal detector has IP68 waterproof grade, can be cleaned under running water or operated reliably under 30-60 meters of water. [EASY OPERATION] The detector is equipped with 2 buttons, can be opened and closed quickly, the mode can be switched by one button, convenient for control. [LITHIUM BATTERY] Equipped with 2pcs 800mAh rechargeable lithium battery, Type C charging port, used for 7‑10 days when fully charged, can be safely used outdoors. Specification: Item Type: Metal Detector Battery: 2 x 6F22 800mAh rechargeable lithium battery (built in battery) Alarm Mode: Sound light, vibration, sound light and vibration Measuring Range: Approx. 10-12cm / 3.9-4.7in Protection Grade: IP68 Voltage: 5V Current: 35mA Power: 0.315MW Frequency: 3KHZ Package List: 1 x Host 2 x Rear Covers 1 x Rear Cover Rubber Washer 1 x Hanging Rope 1 x USB Cable 1 x User Manual Package List 1 x Host 2 x Rear Covers 1 x Rear Cover Rubber Washer 1 x Hanging Rope 1 x USB Cable 1 x User Manual