Characteristics Summary:

• Sound will be heard up to a mile away, sound Power: 115dB 
• Pealess design: No parts to freeze, jam, or deteriorate
• Self-clear chambers work even when submerged
• Easy to blow and impossible to overblow
• Piercing sound that cuts through ambient noise, crowds, and weather
• Heard up to 1 mile away
• Trusted worldwide by safety professionals