D. T. Systems SportDOG Brand Roy Gonia Special Whistle -
The original championship whistle, the SportDOG® Roy Gonia Special Whistle is hand-crafted and has been used to train more Field Champions than any other whistle. The Roy Gonia Special features a lower-pitched sound that carries farther for long range ability. The whistle's easy to blow design creates effective communication while training or in the field. A great all-around dog whistle that amateurs will find as useful as the pros in training all breeds of hunting dogs.