Function: 1. Advanced Technology: The water leak detector adopts new components and the most advanced technology in Japan, which increases the penetration force several times and greatly improves the sound quality. 2. Strong Penetration: The water pipe leak detector has strong penetration, whether it is water pipe, cement pipe or steel pipe, it can play a very good effect. 3. Sound detectors and dual: The sound volume can be adjusted and switched according to the on-site situation. Dual detector design including probe and stylus. 4. Wide range of applications: The water leak detector has great practicability and is suitable for leak detection of various construction pipelines. 5. 3.7V Lithium Battery: Built-in 3.7V rechargeable lithium battery, long life and easy to use. Specification : Item Type: Water Leak Detector Material: ABS Color: as shown in the pictures Weight: approx. 322 g / 11.4 oz Current consumption : 15mA Applicable battery: 3.7V lithium battery (comes with built-in battery) Battery model: 571935 Battery capacity: 350mAh Probe sensitivity: -70Ddb Highest audio magnification: 20000X Penetration: water pipe, cement pipe, steel pipe Product Size: Approx. 6x5.8x2.3cm / 2.4x2.3x0.9 inch Answering method: 32 ohm headphones, can be connected to 16 ohm speakers How to use: 1. Insert the probe or probe into the audio input jack: 2. Headphones to audio out jack: 3. Turn on the power and adjust the sound to the appropriate value. 4. The red light is on when charging and turns green when fully charged. Package List: 1 x Water Leak Detector 1 x probe pin 1 x Headphone 1 x probe 1 USB cable 1 x Manual