Excellent Workmanship: This whistle is carefully polished and acid etched to resist scratches and oxidation. So it can serve your outdoor activities for a long time. High decibels: The brass flute makes a loud sound in cool air with a soft hiss. It will give a survival signal whistle and is perfect for outdoor sports, outdoor camping, hiking, boating and more. Easy to carry: This whistle is very small and light, it can be carried and used anytime. Made of high quality brass, beautifully crafted Wide range of applications: Brass whistle for outdoor survival, rescue and collection. You can also use it in your daily life. Guarantee: If you are not satisfied with the product we have received, you can always email us. We'll get back to you right away and help you solve your problem.