Specification: Item Type: Water Pipe Leak Detector Material: ABS Probe Sensitivity: -60 DDB Maximum Sound Amplification: 13000 Times Penetration: Water Pipe, Cement Pipe, Steel Pipe Sound Input: 32 Ohm Headphones Battery Type: Built In 100mAh Lithium Ion Battery Package List:1 x Water Pipe Leak Detector 1 x Earphone1 x Data Cable1 x Instruction Manual Note:Please allow some error due to manual measurement. EASY TO CARRY: Water pipe leak detector is compact and portable, suitable for various construction pipeline leak detection. ADVANCED TECHNOLOGY: Wall leak detector uses new components and advanced technology to increase penetration several times. RECHARGEABLE FOR REPEATED USE: Water leakage tester uses a built in battery that can be recharged repeatedly for long life. CONNECTED DEVICES: Water pipe leakage monitor can be connected to monitors, recorders, transmitters, wireless devices, etc. EFFECTIVE NOISE FILTERING: Water leakage monitor effectively filters out noise, dramatically improves sound quality, and detects water outlets faster. EASY TO CARRY: Water pipe leak detector is compact and portable, suitable for various construction pipeline leak detection. ADVANCED TECHNOLOGY: Wall leak detector uses new components and advanced technology to increase penetration several times. RECHARGEABLE FOR REPEATED USE: Water leakage tester uses a built in battery that can be recharged repeatedly for long life. CONNECTED DEVICES: Water pipe leakage monitor can be connected to monitors, recorders, transmitters, wireless devices, etc. EFFECTIVE NOISE FILTERING: Water leakage monitor effectively filters out noise, dramatically improves sound quality, and detects water outlets faster.