1. 100% 2. Made of the latest high-quality waterproof materials, completely waterproof 3. Three modes-vibration mode (silent), o mode, vibration and o mode. 4. With three different sensitivity levels, different sound and vibration alarms are issued for different distances between sensors and objects. 5. Suitable for metal detectors in outdoor, indoor, sand, lawn or soil, which can quickly and accurately find coins, silver, jewelry and gold Description: Name: HS-10 Metal Detector The sensitivity of detecting a dollar coin is 6-7 cm. Detection method: vibration, sound alarm Power supply: 9V battery (not included) Working environment: temperature -20°C -60°C Colour: green Material: plastic Size: 28 x 4.5cm Package Contents: 1 x Metal detector (not including battery) 1 x Instruction manual 1 x English manual Only the above package content, other products are not included. Note: Light shooting 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.