specification Material: Aviation Aluminum Alloy Size: 5.6*1.5*0.8cm Feature Ultra-loud lifeguard whistle: The double-pipe emergency whistle can provide up to 120 decibels of sound, which is enough to be heard at a long distance. High quality: aluminum alloy material, sturdy and durable. Lightweight: only 12 grams, easy to carry. Waterproof camping whistle: With excellent airflow design, it can be used in all-weather, rainy and humid weather. Versatility: a loud security guard for any outdoor activities such as camping, hiking, hunting, fishing, boating, etc. Package contains:1*WHISTLE