by Romneys
This practical whistle set from ACME will help you train your four-legged friend. This set includes a double-tone whistle (210.5) for a clear, distinct whistle and a trill whistle (660) for a loud, far-reaching trill. When hunting, the trill serves as a stop signal, which tells the dog to lie down, and the double-tone whistle serves as a command signal. This way, you can communicate with your dog over longer distances and in louder environments.
