Wall Listening Device Sound Amplifier for Water Gas Leak Test

1 High Quality Material: Ear amplifier is made of high quality ABS material, high strength, wear resistant, sturdy and durable. 2 High Sensitivity: Audio listening wiretap device has high sensitivity, clear audio, and you can use the earphone to improve audio quality. 3 Complete Function: With charging hole, earphone hole and upward switch knob. Humanized design, more practical and convenient. 4 Easy Operation: Sound amplifier can be used anywhere, even indoors or in buildings, and has a built-in lithium battery, easy to operate and carry. 5 Application: Audio ear listening device can be used for pipeline side leakage, floor heating detection, water body exploration.

What's in the box
1 x Listening Device