Features 1、DIVING MODE: This metal detector has a submersible standard IP68 waterproof rating and can be cleaned under running water or underwater for metal detection at 30m‑60m. 2、SENSITIVE DETECTING: The handheld metal detector is designed to pinpoint metal during treasure searching, and the submersible detector with a 5.9in coil is also very effective at detecting the smallest metal objects. 3、EASY OPERATION: This metal detector is designed with 2 buttons, which can be easily turned on and off, switching modes in one second, and easy to operate. 4、AUDIBLE ALARM: The detector has both audible and vibrating alarms to indicate the position of metal objects, and the strength of the alarm increases as the detector moves closer to the metal target. 5、RECHARGEABLE BATTERY: Metal detectors no longer use traditional disposable batteries, but rechargeable batteries, which are environmentally friendly and save money. Specification Item Type: Underwater Metal Detector Material: ABS Battery: 1 x 6F22 1600mAh rechargeable lithium battery (shipped with built in battery) Alarm Mode: Sound and light, vibration, sound and light and vibration Measuring Range: Approx. 10-12cm / 3.9-4.7in Protection Level: IP68 Voltage: 5V Current: 75mA Power: 375MW Frequency: 3KHZ Package List 1 x Underwater Metal Detector 2 x Back Cover Accessory 1 x Lanyard 1 x USB Cable 1 x Instruction