(golden)High Frequency Loud Double Hole Emergency Whistle With Key BA

Feature: \n 1. With great airflow design, it can easy to whistle and make a loud, clear sound\n2. Double hole design, great loud sound, to spread further\n3. Through the polishing and pickling process, which can effectively protect the post, and not easy to scratch and oxidation\n4. Lightweight, with a keyring that is convenient to carry\n5. Apply to outdoor survival, self-protection, life-saving and collect \n\nSpecification: \nDescriptions:\n\nThe is a aluminium alloy whistle, you can use it when you are in a extreme environment or in a state of emergency that you can use less effort to blow the whistle to call for help. Through the polishing and pickling process, which can effectively protect the post, and not easy to scratch and oxidation.This survival signal whistle, great for outdoor sporting events, camping, hiking, boating etc. \n\nFeatures: \n\n1. With great airflow design, it can easy to whistle and make a loud, clear sound.\n\n2. Lightweight, with a keyring that is co: