Feature: 1. AMPLIFIED SOUND: The water pipe leakage detector detects pipe leaks by amplifying the sound, and the sound level can be adjusted by using headphones. 2. DUAL PROBE: The water leakage detector adopts a dual probe design, including a round probe and a needle probe, which can be switched according to the site conditions. 3. WIDE USE: The water pipe leakage monitor is practical and the water pipe detection tool is highly penetrating, suitable for leakage detection of various building pipes. 4. RECHARGEABLE: Underground water pipe leakage detector has a built in 3.7V lithium battery, which can be recharged repeatedly, easy to use. 5. PREMIUM MATERIALS: Water pipe leakage detector is made of premium ABS and metal, wear resistance and durable, not easy to be damaged, durable and long service life. Specification: Item Type: Water Pipe Leakage Detector Material: ABS, Metal Current Consumption: 15mAh Battery Used: Lithium Battery 3.7V 200mAh (Shipped with Built In Battery) Probe Sensitivity: -70d Db Maximum Sound Amplification: 20000 Times Receiving Mode: Earphone, Can Be Connected to External 16 Ohm Speaker. Package List: 1 x Host Detector1 x Probe Head1 x Probe Pin1 x USB Cable 1 x Earphone 1 x Instruction Manual 1 x Storage Bag