The Fox 40 Classic Safety Whistle can have the power of 115 dB depending on how hard you blow.

Features

• The 3-chamber pealess design has no moving parts to freeze, jam, or deteriorate.
• Easy to blow and cannot be overblown. The harder you blow, the louder the sound.
• Chambers are designed to self-clear when submerged in water.
• Sound will be heard up to a mile away.
• A whistle is vital for signaling above the sound of surf and whitewater.