Portable Size: The small size of this tool is very convenient for everyday use, you can carry it in your tool bag without taking up too much storage space.Built-in Battery: This tool uses the rechargeable battery to supplys , so you can recharge it in time.Water leakage detector adopts new component and advanced technology, which greatly improves the sound quality, giving you a better experience.Wide Application: This tool can be used to leakage detection of various construction pipelines such as home water pipeline, cement pipes, steel pipes. This water leakage detector is a very essential tool for plumbing engineers.The volumes can be adjusted through the volumes knob, you can adjust the volumes according to your needs in time.Probes sensitivity: -60DdbMaximum audio amplification: 13000X.Penetration: water pipes/cement pipes/steel pipes.Sound input: 32 ohm earphones consumption: 12mABattery: 1 * lithium battery, 100mAh (included)Colour:blackMaterial:plasticPackage Contents:1 x Water Leakage DetectorOnly the above package content, other products are not included.Note: Light reflection 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.