• Titanium material: acid, alkali, and corrosion resistant, not easily deformed at high temperatures, suitable for use in extreme environments
• Three Tube Resonance: High volume whistle, with a maximum volume of up to 130 decibels. A great helper for wilderness exploration and calling for help to survive
• 45 Sound Cutting Vent: More easily blown, The sound is clearer and louder and allows for longer sound transmission distance
• Ball-free Design: The sound chamber is not afraid of dirt and water ingress, and can still perform well even in various harsh environments
• Easy to Carry: Comes with a 1 inch key ring for easy portability and easy access at any time