 |  Silent Dog Whistles (GDO-11412)
Invented by Acme in 1935, the Silent Whistle is the perfect choice people who live in an urban environment, where noise is a factor. We carry a few different silent models, which are not in fact silent but emit a high frequency that is easily heard by dogs. Most dogs hear quite clearly frequencies that the human ear cannot. Both models are adjustable within the frequency range of 5400 Hz. to 12,800 Hz. So they can be tuned to your dog's specific hearing level. Whether your dog is working close to you or at a distance this model is the perfect choice |  |  |
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