Feature:1. Special instrument for searching and confirming the location of water pipe leak.2. Detect pipe leakage by amplifying the sound with headphones, you can adjust the sound level.3. With dual probes, including circular probe and needle probe to cope with different situations.4. Made of high-quality ABS and metal, wear-resistant and durable, not easy to damage.5. Small size, built-in rechargeable lithium battery, convenient to carry and measure.Specification: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 + MetalColor: BlackInput: 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 * 4 * 2cm / 2.4 * 1.6 * 0.8inItem Weight: 208g / 7.3ozPackage Size: 21 * 15 * 4cm / 8.3 * 5.9 * 1.6inPackage Weight: 379g / 13.4ozPackage List:1 * Host1 * Adaptor1 * Circular Probe1 * Needle Probe1 * USB Cable1 * Earphone1 * ManualPackage List:1 * Host1 * Adaptor1 * Circular Probe1 * Needle Probe1 * USB Cable1 * Earphone1 * Manual