Feature
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.

Item Type: Audio Listening Wiretap Device
Material: ABS

Battery: 3.7V lithium battery 150mah (built-in battery)

USB Charging: 5V

1 x Earphone

1 x USB Cable