Features: Special inst ent 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-resistant and durable, not easy to damage. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Special inst ent 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+Metal Color as shown Input: AC 100-240V 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: AC100-240V Package Contents: 1 x Detector Sensor 1 x Adaptor 1 x Circular Probe 1 x Needle Probe 1 x USB Cable 1 x Earphone Only 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.