Features: Special instrument for searching and confirming the location of water pipe leaks. Detects pipe leakage by amplifying sound through headphones; sound level is adjustable. Equipped with dual probes, including a circular probe and a needle probe, suitable for various situations. Constructed from high-quality ABS plastic and metal for durability and resistance to wear. EU Plug type, compatible with countries such as Indonesia, Germany, France, Italy, and others. Highly sensitive sensor with volume control to help prevent ear discomfort. Compact size with built-in rechargeable lithium battery for portability and convenience. Specifications: Material: Plastic + Metal Color: As shown in picture Input: AC 100240V, 50/60Hz, 150mA Output: DC 5V, 1000mA Working Current: 10mA Maximum Audio Amplification Factor: 20,000X Built-in Battery: 3.7V 300mAh Lithium Battery Item Size: 6 x 4 x 2cm / 2.4 x 1.6 x 0.8in Item Weight: 208g / 7.3oz Voltage: AC 100240V Package Contents: 1 x Detector Sensor 1 x Adaptor 1 x Circular Probe 1 x Needle Probe 1 x USB Cable 1 x Earphone Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 13cm.