Feature:    1. [TWO BUTTON DESIGN] Easy control, it can be turned on and off in one second, and switch modes in one second, easy to operate, and bring you a smart experience. 2. [IP68 WATERPROOF RATING] With diving standards, it can completely protect the environment from pollution, and can also be operated reliably under 10-30m underwater in rugged environments. 3. [SCIENTIFIC DESIGN] Instead of using traditional disposable batteries, it uses rechargeable lithium batteries. The charging interface is micro USBA interface and Type& 8209;C interface. 4. [LONG BATTERY LIFE] With two lithium batteries, you no longer have to worry about running out of electricity when using it outdoors. The longest use time is 7& 8209;10 when it is fully charged. 5. [WIDE SCOPE OF APPLICATION] Using impulse induction (PI) technology, it allows users to metal in water, land or any type of soil, and can be used in diving search, public safety inspection, investigation, professional archeology, positioning decoration, etc. Condition. Specification: Item Type: Metal Detector Model: Three In One Material: ABS Power Supply: 2x3.7V 750mAh Rechargeable Lithium Battery (Battery Included) Purpose: It is suitable for metal detection. Detection Type: Square Probe, Round Probe, Straight Probe (Combined Use) Detection Range: Approx. 10-15cm / 3.9-5.9in Detection Depth: 7 Inches Waterproof Rating: IP68 Underwater Operating Depth: Approx. 10-30m / 32.8-98.4ft Alarm Mode: Sound, Vibration, Sound + Vibration Lighting: LED Reset: One Key Reset Charging Method: Micro USB, Type-C Technology: Impulse Induction (PI) Life Time: 7~10 (Full Power State) Package List: 1 x Host 1 x Square Probe 1 x Round Probe 1 x Straight Probe 2 x Data Line 2 x Battery Cover 3 x Waterproof  1 x Lanyard 1 x Toolbox 1 x Manual Note:            1. Before entering the water, make sure that the battery cover is tightened, and only use clean hands to open the battery cover.                 2. The detector must be fully charged before use, and the equipment must be flushed with water after each dive.                 3. Do not leave the equipment in the rinse bucket, it may be damaged by other equipment.