Features Easy to Operate: When using the water crack 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. 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. Highly Sensitive: This water crack 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 fences, casements, doors or armou Lightweight and Compact: This crack detector is compact and complete with a charging port, earphone jack and upward switch knob. 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 Detector 1 x USB Cable1 x Earphone Package List 1 x Water Leakage Detector 1 x USB Cable 1 x Earphone