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 30m60m. 2. SENSITIVE DETECTING: The handheld metal detector is designed to pinpoint metal during treasure searching, and the submersible detector with a 5.9inch coil is also very effective at detecting the smallest metal objects. 3. EASY : 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. Item Type: Underwater Metal Detector 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: . 10-12cm / 3.9-4.7inch Level: IP68 Current: 75mA Power: 375W Frequency: 3KHZ How to Use:Take out the product, turn on the switch to use Colour:Green&Black Material:ABS Package Contents: 1 x Detector 1 x USB charging cable 1 x Waterproof cover 1 x Land cover 1 x Rope Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.