What's in the box:

High Strength Through Wall Microphone Voice Listen Detector for Engineer Water Leakage Oil Leaking Hearing for Repairing Sound Detect Device (Standard)

It can capture subtle sounds through the wall, which is perfect for detecting broken pipes inside the wall and finding leaking locate.

Features:
Easy to listen all the action.
High sense metal probe and detector.
Coming with earphone.
Small and light weight for easy carrying.
Easy operate, cling to the door/window/wall, adjust the v-olume until you hear a clear sound.
Able to get the sound out from the wooden/brick wall/windows/door/armor plate.
Can be used as recording pen.

Specifications:
Color: black
Cunsumption current:10mA
Measuring e-lement sensitivity: -70db
Highest audio enlargement multiple: 20000X
Battery: 5V, 200mAh
Item size: 57 * 35mm / 2.2 * 1.4in
Item weight: 25g / 0.9ounce
Package size: 112 * 87 * 45mm / 4.4 * 3.4 * 1.8in
Package weight: 45g

Packing List:
1 * Voice Listen Detector
1 * Earphone
1 * USB Cable