STEVE SAYS: The whistle is a "silent whistle". It is used to give commands to dogs over distance just as any other whistle is used. It is called a "silent whistle" because it opperates on a frequency above that of the average person's hearing. Most people will hear a faint sound. In other words it is very LOUD to dogs but very QUIET to people.
It is not a "silencer" and does nothing to make a dog stop barking nor will it repell an agressive dog.
Read more about the European Style Silent Whistle
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European Quality
Light single body construction
Adjustable Tone - Simply remove the black cap to adjust the tone to meet your dog’s hearing capabilities.
Instructions:
This whistle produces sounds that are insignificant to the human ear but extremely audible to the more sensitive hearing of a dog. While it is not totally silent, this whistle is an excellent means of communication with your best friend without the annoying trill of normal dog whistles. With a range of up to 2 miles with optimum weather and terrain conditions, the European Silent whistle is adjustable for close and long range work.
Adjusting the Tone
Remove the black plastic cap. It is a tight fit, but it will snap off. With your dog close by, start blowing the whistle. While adjusting the turn screw, observe at what frequency your dog reacts the most. When you can see an obvious reaction, tighten the lock nut and replace the black cover. Take the dog and the whistle outside and do the same thing. The results should be very similar. Now you have adjusted your whistle. Have fun!
Before you decide on which collar to buy, read our
Dog Training Collars guide for dog product comparisons, features, reviews, & more information. -- res