Outdoor Survival Aluminum Whistle For Camping Hiking Recommended

Feature: \n 1. With great airflow design, it can easy to whistle and make a loud, clear sound.\n2. Made of high quality aluminum alloy, through the polishing and pickling process, which can effectively protect whistle body, and not easy to scratch and oxidation.\n3. Detachable design, built-in waterproof space can store paper strips and other small item.\n4. With a keychain, which allows the whistle to be attached to your key ring or hang on the neck.\n5. Great for outdoor survival, life-saving, self-defense, collection, also for dog training. \n\nSpecification: \n\nFeatures: \n\n--\n\nWith great airflow design, it can easy to whistle and make a loud, clear sound. \n\n--\n\nMade of high quality aluminum alloy, through the polishing and pickling process, which can effectively protect whistle body, and not easy to scratch and oxidation. \n\n--\n\nDetachable design, built-in waterproof space can store paper strips and other small item. \n\n--\n\nWith a keychain, whi: