This is the one that changed the game!
Fox 40’s first pealess whistle.
Authentic. Original.
FEATURES:

The Fox 40® Classic® is the standard choice referees and coaches at all levels, rescue professionals and general safety worldwide
No moving parts to freeze, jam or deteriorate
Flawless, consistent and reliable
The harder you blow, the louder the sound
Easy to blow and cannot be overblown
Will be heard above ambient noise, loud crowds, the roar of engines, breaking waves and thundering gale-force winds
Chambers are designed to self-clear when submerged in water
Sound will be heard up to a mile away