The whistle can be hung on the neck or belt.
Range: up to 200 m
TOMMILAND's advice: The dog's ear is very sensitive to tones of high frequency human hearing inaudible.
To make the whistle still the same frequency without unwanted fluctuations, fix the set tone by using the lock nut. You will get the desired co-operation of your dog and effective training results.
Size : 6 cm