1. Small and convenient to carry.Suitable for all kinds of construction pipe leakage detection. 2. The penetrability is increased several times, and the sound quality is greatly improved with adopts new components and advanced technology. 3. This product use built-in battery (can be recharged repeatedly) 4. Power consumption:12mA 5. Probe sensitivity:-60 DDB 6. Sound input: 32-ohm earphone. 7. Maximum audio Magnification: 13000X
