Features<br> 1High sensitivity, strong penetration, the penetratingpower is increased several times, and the sound quality is greatly improved.<br> 2It can be connected to the display spectrum, recording pen, transmitter, wireless equipment, etc. , and can also be inserted into the two-channel wire to record directly.<br> 3Small and light weight for easy carrying.<br> 4Easy operate, cling to the door/window/wall, adjust the sound with the knob until you hear a clear sound.<br> 5Able to get the sound out from the wooden/brick wall/windows/door. 6Effectively filter noise and detect sound faster.<br> Specification<br> It can captures subtle sounds through the wall, which is perfect for detecting broken hose inside the wall and finding leaking locate.<br> Features:<br> High sensitivity, strong penetration, the penetratingpower is increased several times, and the sound quality is greatly improved.<br> It can be connected to the display spectrum, recording pen, transmitter, wireless equipment, etc. , and can also be inserted into the two-channel wire to record directly.<br> Small and light weight for easy carrying.<br> Easy operate, cling to the door/window/wall, adjust the sound with the knob until you hear a clear sound.<br> Able to get the sound out from the wooden/brick wall/windows/door.<br> Effectively filter noise and detect sound faster.<br> Specifications:<br> Color: black<br> Cunsumption current:12mAh<br> Probe sensitivity: -60dB<br> Working time: 5-7h<br> Battery: 3.7V, 100mAh<br> Item size: 37 * 34 * 27mm / 1.5 * 1.3 * 1.1in<br> Item weight: 25g / 0.9ounce<br> Package size: 93 * 80 * 37mm / 3.7 * 3.1 * 1.5in<br> Package weight: 73g / 2.6ounce<br> Packing List:<br> 1 * Voice Listen Detector<br> 1 * Earphone<br> 1 * USB Cable<br> 1 * User Manual<br> Package List<br> 1 * Voice Listen Detector<br> 1 * Earphone<br> 1 * USB Cable<br> 1 * User Manual<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin