The three-frequency outdoor survival whistle is an essential tool for any adventurer. Designed for high-pitched, high-frequency sound, this emergency whistle is for disaster prevention and rescue operations. Whether you're hiking, camping, or boating, this whistle ensures you're heard in any emergency situation. Simply blow into the whistle to produce a loud, attention-grabbing sound that can be heard over long distances. Features -Color:Black -Material:Plastic -Size:7.00X2.50X0.50cm/2.75X0.98X0.20in -Highpitched and highfrequency: the whistle emits a highpitched, highfrequency sound that travels far, making it ideal for attracting attention in survival and rescue situations. -Multipurpose use: not just a survival whistle, it can also be used as a lifeguard whistle and emergency whistle, offering versatile functionality. -Lightweight and portable: compact and lightweight, this whistle can be easily attached to keychains, backpacks, and more, ensuring you can carry it anywhere. -Durable and reliable: built to last, this whistle is designed to withstand harsh environments, making it a dependable tool in emergencies. -Wide range of applications: for outdoor survival, earthquake rescue, , and camping, this whistle is your reliable companion Package list: 10 x Whistle 10 x Lanyard