Description: 【High Sensitivity】: High sensitivity detection of sound from walls, window, doors panels, with headphones included for clear sound quality 【Wide Application】: Water leakage detection used for pipeline side leakage, floor heating detection, water body exploration. Suitable for many kinds of pipelines and ground 【Powerful Function】: Water pipe leakage tester equipped with charging hole, earphone hole and volume knob, easy to adjust 【Easy to Use】: Through wall microphone is simple operation, close to the door, window, wall, adjust the volume until you hear a crisp sound 【Portable】: Water Leakage Detection is convenient for charging, easy to use and carry around Specification: Material: Metal Working Time: 5-7hrs Size: 5.7cmx3.5cmx3.5cm/2.24inchx1.38inchx1.38inch Suitable: Cement wall, steel wall, wooden wall, iron wall, glass, cavity brick test method: Earphone, Can be an external speaker Package Includes: 1 Water Leakage Detection 1 Headphone 1 Cable