: A high-performance, pealess whistle designed for extreme conditions; its sound can be heard over a mile away.
: Industry standards for gun dog and working dog training, providing a consistent pitch that dogs can recognize instantly. buy whistle
: Pealess whistles (like the FOX 40) have no moving parts, meaning they won't jam or freeze in cold weather. Whistles with a "pea" (like the ACME Thunderer) create a trilling sound that is easier to vary in tone for nuance. : A high-performance, pealess whistle designed for extreme
