The choice of professionals. Stable frequency regardless of the strength of the whistle.

Medium-intensity whistle, an excellent multi-tool with a sound that is very close to human hearing. This special whistle maintains its frequency regardless of how hard you blow.

Your dog will always know that it is his special whistle. Known as the Pro-Trialler, it causes less confusion for your dog, especially at great distances or when you blow hard if your dog becomes disobedient or strays off course during an outing.

This whistle is particularly effective at long distances and works very well with Pointer, Setter, Retriever, Labrador, and most Terriers. An excellent whistle for dogs that are trained more difficultly.