ZJ Stainless Steel Emergency Survival Whistles with Carabiner and Lanyard

【Double Tube Whistle】Double-tube design can lightly blow the ultra loud explosion sound, which can reach 120 decibels (similar to the sound of a decoration electric drill. Audible range is up to 30m. 【304 Stainless Emergency Whistle】Waterproof, high temperature and rustproof, sturdy and durable, especially suitable for watersports lovers. Only 0.7oz (20g), light and portable. 【Emergency Survival Whistle】5*2cm (1.9*1.2”) small portable whistle with keychain & Lanyard--- can tie on your backpack,belt,etc. 【Convenient Camping Whistle】The whistle has no built-in pea ,so it will not mold and breed bacteria because of the pea. Be used in all-environment all-weather, rainy day, humid weather with excellent airflow design. 【Safe Emergency Whistle 】Suit for outdoor activities: camping, hiking, hunting, fishing, boating,surfing.Suit for training,survive in the wild and rescue. Can improve your personal safety and get help quickly.