1. Dual-tube design, it can produce a louder sound that can be heard from a distance. The dual-tube emergency whistle can emit a sound of over 100 decibels, which is loud enough to be heard from far away. 2. Emergency survival whistle: The whistle produces a loud and clear sound. It has no moving parts, so it is less likely to impede the sound transmission or get stuck, making it easier for you to be noticed in an emergency. For safety reasons, it is advisable to carry a portable whistle with you. 3. Easy to carry: The safety whistle can be clipped onto clothes, belts, travel vests, life jackets, backpacks, shoulder straps, etc. You can also hang the whistle around your neck with a lanyard (the lanyard is not included in the package). 4. Bright color: It is highly eye-catching, which is helpful in search and rescue situations. Due to its bright orange color, it is not easy to lose. This color also represents an emergency. In any situation, both you and the orange whistle are relatively easy to notice. It is suitable for lifeguards, self - defense, and emergency use. 5. Wide range of uses: It can meet the needs of daily life and is applicable not only to emergencies in sports events. The loud safety whistle is suitable for various outdoor activities such as camping, hiking, hunting, fishing, boating, etc., and can also be used for dog training.