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 power, so you can recharge it in time. Water leakage detector adopts new component and higher 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., Manufacturer: Akfldms