Feature:1. Double Probe: Water pipe detector adopts double probe design, including round probe and needle probe, which can be switched according to the site condition.2. Working Principle: This audio device works by amplifying the vibration of the audio. The sound is a waveband, and depending on the size of the sound, this waveband will travel through short and long distances and be amplified by this device.3. Rechargeable: Water pipe detector has built in battery, can be recharged and used repeatedly, small size and compact structure, can be carried around and used.4. Scope of Application: Water leakage tester is for leak detection of water pipes, cement pipes, steel pipes and other kinds of constructed pipes.5. ABS and Metal: Leak detector is made of ABS and metal, which is wear resistant and durable for long time use.Specification:Item Type: Pipe Leak DetectorMaterial: ABS, MetalWeight: Approx. 370g / 13.1ozSize: Approx. 6 x 4cm / 2.4 x 1.6inConsumption Current: 15mABattery: Lithium Battery (Ship with Inbuilt Battery)Battery Type: 18650Battery Capacity: 1000mAhProbe Sensitivity: -10D db to -70D dbMaximum Audio Amplification: 20,000 TimesPenetration: Water Pipe, Cement Pipe, Steel Pipe.Package List:1 xPipe Leak Detector (Ship with Inbuilt Battery)1 x Plug1 x Round Probe1 x Needle Probe1 x USB Cable1 x Earphone1 x User Manual