Able to get the sound out from the wooden/brick wall, windows or door or armor plate. Can be used for recording pen. 1 Clockwise turn the master switch to start the device.
2 Adjust the volume until you hear the sound clearly. Highest audio enlargement multiple: 20000X. Penetrate sex:Cement wall, steel wall, wood wall, Iron wall, glass, cavity brick. Monitor style:Earphone, can outside meet speaker. Record style:Have export hole can outside meet record.Size: about 43 36 mm/ 1.69 1.42 inches. 1 x Ear Listen Through Wall. The item "High Sensitivity Spy Ear Audio Listening Device Amplifier Wall Voice Eavesdrop" is in sale since Wednesday, September 2, 2020. This item is in the category "Consumer Electronics\Surveillance & Smart Home Electronics\Home Surveillance\Security Cameras".
The seller is "sxdf32" and is located in Shenzhen. This item can be shipped worldwide.