ACME PRO FIELD TRIALER DOG TRAINING WHISTLE The Acme Pro Field Trailer whistle has a constant frequency no matter how hard or soft you blow. This is an excellent whistle that makes the same clear consistent sound every time. It is small and easy to hold in your teeth and still be able to talk. Your dog should be able to hear this whistle for several hundred feet or more. Comes with lanyard and strong stainless clip. This is a pea less whistle. 1017A Acme Pro Field Trailer whistle.
