Zero Harm

This is the only whistle on the market that can provide a full spectrum of sound frequencies from a single blow of the whistle. The key to this whistle is loud, distinct sound is in its three-chambered design: two pea-less side chambers that produce omnidirectional sounds at different frequencies, and a center chamber with a waterproof pea that produces a powerful 120-decibel staccato sound.


Product Color: Red