Ultrasonic Audio Recording Blocker | White Noise Generator | Powerful Microphone Suppressor Device | Prevent Voice Recording | BDA-3 (FCC, CE & ICES Compliant)

THIS ACTUALLY WORKS ONCE YOU TURN IT ON AND POINT IN THE DIRECTION OF ANY RECORDER YOU HEAR NOTHING BUT WHITE NOISE ON THE RECORDING ..ITS NOT LOUD ENOUGH FOR A PERSON TO HEAR UNLESS YOU HOLD IT UP TO YOUR EAR ,THEN YOU HEAR WHITE NOISE BUT VERY LOW SO I CAN BE DISCRETE...PRODUCT IS QUALITY BUILT ..ONLY CHANGE I WOULD MAKE IS ADD MORE SPEAKERS ALL AROUND THE DEVICE IN A CASE WHERE ITS UNKNOWN WHERE THE RECORDER MIGHT BE HAVING A 360 DEGREE COVERAGE WOULD BE BEST

The device does not really protect you from recording devices unless both the ultrasonic blocker and the recording device are on the same plain and unobstructed. Not worth the money.