• Titanium material: acid, alkali, and corrosion resistant, not easily deformed at high temperatures, suitable for use in extreme environments
• Suitable for skin contact: Made of safe materials that do not rust or fade, can come into contact with the skin, and can be used by mouth
• Single-Tube Loud Sound Design: Easy to blow, up to 120 decibels. A great tool for signaling for help in outdoor emergencies
• No Ball Design: Functions even when exposed to water or dust; the metal whistle core is pressed into the whistle tube securely, so it won't fall off even if you poke it hard
• Light as a Feather: Weighs only 5.3 g, compact and exquisite. Equipped with a long rope and a small key ring, it can be used as a hanging neck or keychain for easy access at any time