Specification: Item Type: Pipe Water Leakage Detector_x000D_Material: Metal_x000D_Probe Sensitivity: -60dB_x000D_Sound Amplification: 25000 Times_x000D_4 Segment Sound Selection: 3 Speed (100Hz-700Hz), 2 Speed (700Hz-900Hz), 1 Speed (900Hz-1100Hz), 0 Speed (1100Hz-1600Hz)_x000D_Battery Type: Built in 320mAh 6F22/9V Carbon Battery Features: 1Principle: Leak detector works by relying on the physics of the sound source of the shock wave to transmit sound will gradually amplify the sound, into the ear can be heard normally, the larger the detection of water pipe leak, the better the effect. 2High Sensitivity: The pipe leakage detectors have superior performance, clear sound quality, strong sensitivity and imported components. 34 Speed Adjustment: The pipe water leakage detector uses 4 speed adjustment to meet different conditions of use. 4Metal Material: The water pipe leakage monitor is made of full metal body with fine workmanship, which is precise and professional instrumentation. 5Compact and Portable: Underground pipe water monitor is compact and easy to carry, suitable for a variety of pipes and floor drains detection. PackageList: 1 xPipeWaterLeakageDetector 1 x Probe 1 x Probe Protection Cover 1 x Earphone 1 x Storage Box 1 x Chinese and Japanese Manual