Feature: 1. Easy to Operate: When using the water leak detector get close to a door, window or wall and adjust the volume until you hear a crisp sound, you can easily hear all the sounds in one step. 2. Wide Application: The water leakage detector can be used for pipe side leakage, floor heating detection and water ingress detection. Suitable for all kinds of pipes and floors, ducts etc. 3. Highly Sensitive: This water leak detector is aligned to the high sensitivity metal of the headphones for improved sensitivity and sound texture and a more convenient use experience. High sensitivity detection of sound from walls, windows, doors or armour plate, with headphones included for clear sound texture. 4. Lightweight and Compact: This leak detector is compact and complete with a charging port, earphone jack and upward switch knob. 5. Easy to Use: This water leakage detector is user friendly and has a built in battery that can be recharged repeatedly, making it easy to use and adjust. Specification: Item Type: Water Leakage Detector Material: ABS Battery: 1 x 100mAh 3.7V 302025 Lithium polymer battery (included) Measuring Range: Within 1m/3.28ft Measuring Object: buried pipes in walls, underground pipes Operating Temperature: -10℃ to 50℃. Package List: 1 x Water Leakage Detector1 x USB Cable1 x Earphone