Double Tube High Frequency Metal Outdoor Survival Whistle

This whistle is made of aluminum alloy, high quality and durable. It is suitable for outdoor activities such as camping, hiking, hunting, boating, etc. It can also be used for dog training. It is convenient to carry, can be hung on the backpack or hung on the key ring, stylish and practical. Clear sound quality. The emergency whistle has a well-designed airflow, which can provide up to 120 decibels, enough to be heard from a distance. 2 1/6 "L x 3/5" W x 1/3" H