F-19 Anti Recorder Microphone Ultrasound Wave Generator Stops Phone Recording Listening Devices Sony WRT amplifying those structural sounds up

amplifying those structural sounds up to 20

you receive sharp

Combining with a compact

the unit provides 2 to 4 hours of continuous operation

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F-19 Anti Recorder Microphone Ultrasound Wave Generator Stops Phone Recording Listening Devices Sony WRT amplifying those structural sounds upThe F 19 disrupts audio listening and recording devices by emitting inaudible ultrasonic waves. These waves saturate the diaphragms of nearby microphones, making any recorded audio sound like noisy static. Compact, portable unit intended for privacy protection in confidential settings like business meetings, legal consultations, and private residences. Unlike audible "white noise" generators, it operates silently to human hearing while effectively