Features: Instrument for searching and confirming the location of water pipe leaks. Detects pipe leakage by amplifying sound through headphones; adjustable sound level. Equipped with dual probes, including a circular probe and a needle probe, suitable for various situations. Constructed from high-quality ABS plastic and metal, offering durability and resistance to wear. EU Plug type; compatible with countries using EU standard outlets. Highly sensitive detection with volume control to protect hearing comfort. Compact size and built-in rechargeable lithium battery for portability and convenience. Specifications: Material: Plastic + Metal Color: As shown in picture Input: AC 100–240V 50/60Hz 150mA Output: DC 5V 1000mA Working Current: 10mA Maximum o 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 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 errors are within +/- 1–3cm.