Features1High sensitivity, strong penetration, the penetratingpower is increased several times, and the sound quality is greatly improved.2It can be connected to the display spectrum, recording pen, transmitter, wireless equipment, etc. , and can also be inserted into the twochannel wire to record directly.3Small and light weight for easy carrying.4Easy operate, cling to the doorwindowwall, adjust the sound with the knob until you hear a clear sound.5Able to get the sound out from the woodenbrick wallwindowsdoor. 6Effectively filter noise and detect sound faster.SpecificationIt can captures subtle sounds through the wall, which is perfect for detecting broken hose inside the wall and finding leaking locate.Features:High sensitivity, strong penetration, the penetratingpower is increased several times, and the sound quality is greatly improved.It can be connected to the display spectrum, recording pen, transmitter, wireless equipment, etc. , and can also be inserted into the twochannel wire to record directly.Small and light weight for easy carrying.Easy operate, cling to the doorwindowwall, adjust the sound with the knob until you hear a clear sound.Able to get the sound out from the woodenbrick wallwindowsdoor.Effectively filter noise and detect sound faster.Specifications:Color: blackCunsumption current:12mAhProbe sensitivity: 60dBWorking time: 57hBattery: 3.7V, 100mAhItem size: 37 * 34 * 27mm 1.5 * 1.3 * 1.1inItem weight: 25g 0.9ouncePackage size: 93 * 80 * 37mm 3.7 * 3.1 * 1.5inPackage weight: 73g 2.6ouncePacking List:1 * Voice Listen Detector1 * Earphone1 * USB Cable1 * User ManualPackage List1 * Voice Listen Detector1 * Earphone1 * USB Cable1 * User Manual