Features: 
1.[High Sensitivity Detection]Instantly detect the sound of walls, windows, doors or armor plates, with headphones included, the sound quality is clear. 
[Easy Operation]Close to the door, window, wall, adjust the volume until you hear a crisp sound, you can easily listen to all sounds in one step. 
2.[Strong practicability] It is suitable for water leakage detection of various construction pipelines. Detect leaks in pipes by amplifying the sound, and with headphones you can adjust the sound level. 
3.[Easy to use]Built-in 3.7V lithium battery, which can be recharged repeatedly, easy to use.     
Features: 
Material: ABS + electronic components 
Packing: color box 
Size: 66*35mm 
Weight: 66 grams 
Measuring range: within 1m/3.28ft 
Measurement object: underground pipes hidden in the wall 
Working temperature: -10℃~50℃ 
Power supply: built-in lithium battery 
Package size: 150 X 95 X 43mm 
Host x1 + Headphone x1 + USB cable x1    
Package List: 
Electronic Headphone Leak Detector Water Pipe Detection Equipment Kit – Host x1 + Headphone x1 + USB Cable x1