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This lightweight, compact whistle is ideal for dog training, indoors or out. Ultrasonic whistles are particularly suited for training noise-sensitive breeds such as border collies.
Although termed as a 'silent' whistle, the whistle has to be slightly audible to the human ear, in order for you to be able to effectively control your dog - as otherwise you would not be able to gauge the effect that it is having.
* Compact design
* Great for noise-sensitive breeds
* Adjustable pitch