It can capture subtle sounds through the wall, which is perfect for detecting broken pipes inside the wall and finding leaking locate.<br> Features:<br> High sense metal probe and detector.<br> Coming with earphone.<br> Small and light weight for easy carrying.<br> Easy operate, cling to the door/window/wall, adjust the v-olume until you hear a clear sound.<br> Able to get the sound out from the wooden/brick wall/windows/door/armor plate.<br> Can be used as recording pen.<br> Specifications:<br> Color: black<br> Cunsumption current:10mA<br> Measuring e-lement sensitivity: -70db<br> Highest audio enlargement multiple: 20000X<br> Battery: 5V, 200mAh<br> Item size: 57 * 35mm / 2.2 * 1.4in<br> Item weight: 25g / 0.9ounce<br> Package size: 112 * 87 * 45mm / 4.4 * 3.4 * 1.8in<br> Package weight: 45g<br> Packing List:<br> 1 * Voice Listen Detector<br> 1 * Earphone<br> 1 * USB Cable<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-DIMEANI official store