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Wall Mounted Microphone Sound Amplifier High Intensity Voice Monitor Detector For Engineer Pipe Leak Oil Leak Sound Monitor Description:Name:Wall Mounted MicrophoneMeasuring range: within 1m/3.28ft;Measurement object: underground pipes are hidden on the wall;Working temperature: -10?50;Power supply: built-in lithium battery;Packing: 150 x 95 x 43mm/5.91 x 3.74 x 1.69quot;;Packing list:1 x wall mounted microphone1 x headphones1 x charging wire1 x packagingNote:Due to manual measurement, please allow 1-3 cm error, thank youDue to screen and other objective reasons, there may be a certain color difference, please understand.