Most noise suppressors I've seen are toys. This one will wake up the neighbors, scare people and animals, and other than wearing it at night, I leave it at home on my bedside table. I live in an apartment building and tested whether the sound is transmitted to my neighbors. It does! Now they all know to come running when they hear that sound! Very durable, easy to use and rechargeable. You can buy cheaper but I doubt you can buy anything better.
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