Item Type: Pipe Leak Detector Material: ABS, Metal Weight: Approx. 370g / 13.1oz Size: Approx. 6 x 4cm / 2.4 x 1.6in Plug: EU Plug Voltage: 110-240V Consumption Current: 15mA Battery: Lithium Battery (Ship with Inbuilt Battery) Battery Type: 18650 Battery Capacity: 1000mAh Probe Sensitivity: -10D db to -70D db Maximum Audio Amplification: 20,000 Times Penetration: Water Pipe, Cement Pipe, Steel Pipe Package List 1 x Pipe Leak Detector (Ship with Inbuilt Battery) 1 x Plug 1 x Round Probe 1 x Needle Probe 1 x USB Cable 1 x Earphone 1 x User Manual 1Double Probe: Water pipe detector adopts double probe design, including round probe and needle probe, which can be switched according to the site condition. 2Working 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. 3Rechargeable: Water pipe detector has built in battery, can be recharged and used repeatedly, small size and compact structure, can be carried around and used. 4Scope of Application: Water leakage tester is 110240V for leak detection of water pipes, cement pipes, steel pipes and other kinds of constructed pipes. 5ABS and Metal: Leak detector is made of ABS and metal, which is wear resistant and durable for long time use.