Feature:1. Easy to Operate: The sound amplifier comes with a probe that is easily attachable to various pipe materials, floors, and walls through the headphones that the naked ear would not usually detect.2. Practical: The microphone amplifier is equipped with a charging hole, headphone port, and a switch knob that provides accurate measurements, eusure sensitivity and sound quality.3. Pipe Leakage Monitor: The microphone is useful for side leakage of pipes, underfloor heating detection, and water detection, compatible with various pipe materials, floors, walls, and more.4. High Clarity: An excellent sound detector with crystal clear audio, it can be used in any environment, even in indoor or building settings, built in 200mAh li battery, long standby time.5. Versatile Compatibility: The ear listening amplifier can be used with a wide range of materials, including concrete walls, steel walls, wooden walls, iron walls, glass walls, hollow bricks, various pipes.Specification:Item Type: Sound AmplifierMaterial: ABSCurrent Consumption: 10mABattery: 200mAh li battery (included)Operating Temperature: -20C-50CApplication:Suitable for cement walls, steel walls, wood walls, iron walls, glass walls, hollow bricks, etc., as well as various pipe materials, floor slabs, walls, etc.Monitoring Mode: Can be connected to headphones and external speakers.Package List:1 xSound Amplifier1 x USB Charging Cable1 x Earphone