NEW High Strength Wall Microphone Voice Detecotor for Engineer Water Leakage Oil Leaking Hearing for Repair

1. High-sensitivity detection of the sound of walls, windows, doors or armor plates, with earphones attached, the sound quality is clear High sensitivity detector.High sensitivity detector 2. Special pull back vehicle with secret listening device.
3. High sense metal probe.
4. Coming with earphone. High sensitivity detector.High sensitivity detector.High sensitivity detector. 5. Small as a jelly.
6. Complete function:charge hole,earphone hole and switch knob upside.
7. Easy operate,cling to the door,window or wall.High sensitivity detector.High sensitivity detector. 8. Able to get the sound out from the wooden/brick wall, windows or door or armor plate.
9. High sensitivity detector.
13. How to use:
1) Clockwise turn the master switch to start the device 1. Cunsumption current:10mA
2. Usage battery:9v batteries
3. Four sections audioes choicde
A section 200Hz High sensitivity detector.High sensitivity detector.High sensitivity detector..syi