Special 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. 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-resistant and durable, not easy to damage. Small size, built-in rechargeable lithium battery, convenient to carry and measure. Specifications: Material: ABS + Metal Color: Black 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 * 4 * 2cm / 2.4 * 1.6 * 0.8in Item Weight: 208g / 7.3oz Package Size: 21 * 15 * 4cm / 8.3 * 5.9 * 1.6in Package Weight: 379g / 13.4oz Package List: 1 * Host 1 * Adaptor 1 * Circular Probe 1 * Needle Probe 1 * USB Cable 1 * Earphone 1 * Manual Shipping: 1.We guarantee to ship goods out within 24-72 hour after payment confirmation except holiday. 2.We ship by China post,HKpost EMS,DHL,Fedex,according to your choice when placing orders . 3.If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem. 4.We are not responsible for delays causedby the customs,Import duties,taxes or other customscharges. Warranty: 1.All items have 1 year guarantee.IF your purchase do not meet merchantable quality, fitness for purpose or match the description, We can make sure your issues are resolved . 2.For wrongly-shipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment. 3.For defective or faulty products,please take photos or videos,we would resend or refund after confirmation.