Fox40 whistles are a very loud pealess whistle. The non-corrosive brass ring makes the FOX 40 Whistle ideal for rescue and emergency work, paddlesports, hunting, fishing, walking, jogging or cycling. The choice for officials in the NHL, CFL....

3 Chamber Pea-less Design, for a high pitched, loud and shrill tone
The penetrating pealess whistle is designed never to fail and cannot be "overblown"
The harder you blow, the louder the sound.
The 115 decibel range can be heard distinctly above most man-made and environmental noises.
Scientifically tuned air chambers create a penetrating trill.
Pealess design assures dependability.
As an emergency sound signalling device, the FOX 40 can be carried on a key chain.

Fox 40 Classic Whistle