Usage Tips:Features:Special instrument for searching and confirming the location of water pipe leak.Detect pipe leakage by amplifying the sound with headphones, you can adjust the sound level.With dual probes, including circular probe and needle probe to cope with different situations.Made of high-quality ABS and metal, wear- and , not easy to damage.Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onSpecial instrument for searching and confirming the location of water pipe leak. Highly sensitive, slowly adjust volume so as not to discomfort your ears. With dual probes, including circular probe and needle probe to cope with different situations. Small size, premium quality, convenient to use.Small size, built-in rechargeable lithium battery, convenient to carry and measure.Specifications:Material: Plastic+MetalColor as shownInput: AC 100-240V 50/60Hz 150mAOutput: DC 5V 1000mAWorking Current: 10mAMaximum Audio Amplification Factor: 20,000XBuilt-in Battery: 3.7V 300mAh Lithium BatteryItem Size: 6 x 4 x 2cm / 2.4 x 1.6 x 0.8inItem Weight: 208g / 7.3ozVoltage: AC100-240VPackage Contents:1 x Detector Sensor1 x Adaptor1 x Circular Probe1 x Needle Probe1 x USB Cable1 x EarphoneOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.