Sound Amplifier Enhanced Microphone Audio Ear Listening Device Amplifier Through Wall Door Voice Tool

Feature: 1. It can be used for pipeline side leakage / floor heating detection / physical exploration for water, suitable for various pipeline materials and ground, wall, etc. 2. High-sensitivity metal probe with earphones makes it more sensitive and sound-qualified. 3. Compact and complete function, with charging hole, earphone hole and upside switch knob. 4. Easy to operate, it can get the sound out from the wooden/brick wall, window, door or armor plate. 5. It has a built-in lithium battery, easy to operate and carry. Specification: Condition: 100% Brand New Item Type: Ear Listening Device Material: ABS Color: As Pictures Shown Built-in Battery Capacity: 200MAH Size: Approx. 42 x 37mm / 1.7 x 1.5in (Length x Diameter) Package List: 1 x Ear Listening Device 1 x Earphone 1 x USB Cable 1 x Manual Note: The probe must contact the tube surface steadily. Please do not move the main unit in parallel during the contact to avoid damage to the instrument.