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