brand new and high quality<br> <br>Features:<br>Sensitive Sound Sensitivity: Align with the high-sensitivity metal of the earphone to improve sensitivity and sound quality. More convenient use experience.<br>Easy to Operate: The sound can be made of wood/coaxial, window, door or armor plate. Has good compatibility.<br>Powerful Function: The function is compact and complete, with charging hole, earphone hole and up switch knob. Humanized design, easy to use and adjust.<br>Excellent Sound Clarity: It can be used anywhere, even indoors or in buildings, and built-in lithium battery, which is easy to operate and carry.<br>Wide Application: Can be used for pipeline side leakage/floor heating detection/water body detection. Applicable to all kinds of pipeline materials, floors, pipelines, etc.<br> <br>Specification:<br>Current Consumption: 10mA<br>Battery: Built-in 9V Battery<br>Working Temperature: -20-50<br>Sensitivity of Measuring Element: -70db<br>The Highest Audio Magnification: 20000X<br>Material: ABS + Electronic Components<br>Size: approx.61x35mm<br>Color: Black<br>Quantity: 1 Set<br> <br>Note:<br>Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.<br>Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you<br> <br>Package Includes:<br>1 x Earphone<br>1 x Detector for Head<br>1 x Data Cable<br>(other accessories demo in the picture is not included<br>)