Details Hand Strap: It can be hung at the wrist to prevent the detector from being lost in case of accidental loosening of the hand during underwater operation. Non-slip Handle: The EVA-covered handle effectively increases the friction between the handle and the palm, which can effectively prevent slipping. Application It can be used in lakes, rivers, oceans, and other salt or fresh water, and also be used on land or in different types of soil. Specifications Model: GC-2008 Color: Black Material: ABS, EVA Style: Modern Assembly Required: No Power Source: Battery Powered Battery Type: 1* 9V Battery(Not Included) Light Source: LED(Included) Light Color: White Operating Principle: Pulse Induction Detection Type: Metal Alarm Mode: Vibration, White Light Flash Automatic Shutdown Time: 1min Work Frequency: 20HZ Working Temperature: -10~45°C/14~113°F Waterproof Rating: IP68 Applicable Water Depth: Within 20m/65.62ft Detection Depth: About 5cm/1.97in(A Metal The Size of A Coin), About 25cm/9.84in(A Metal The Size of A Mobile Phone) Product Length: 44cm/17.32in Probe Diameter: 11.2cm/4.41in Package Size: 45*11*11cm/17.72*4.33*4.33in Gross Weight: 0.6kg/1.32lbs Net Weight: 0.5kg/1.1lbs Package Included 1* Metal Detector 1* English Manual Notes 1.Please note that this product is not suitable for detecting diamonds. 2.Please note the larger the detected object, the deeper the detection distance, while the smaller the object, the smaller the detection distance. 3.Please read the operating manual completely before use. And pay particular attention to the safety instructions included.