The Fox 40 pealess whistle has no moving parts to freeze, jam or deteriorate The chambers are designed to self-clear when submerged in water. The harder you blow, the louder the sound.

FEATURES:​​

• The Fox 40® Classic® is the standard choice referees and coaches at all levels, rescue professionals and general safety worldwide
• Flawless, consistent and reliable
• 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
• Sound will be heard up to a mile away