1. Features: 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. 2. With dual probes, including circular probe and needle probe to cope with different situations. 3. Made of ABS and metal, wear-resistant and durable, not easy to damage. 4. Plug Type: EU Plug, it applies to Indonesia, and so on. 5. Highly sensitive, slowly adjust volume so as not to discomfort your ears. 6. Small size, built-in rechargeable lithium battery, convenient to carry and measure. 7. 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 8. 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 are not included. 9. Note: Light reflection and different displays may cause the color of the item a little different from the real thing. The measurement allowed error is +/- 1-3cm.