Aluminum Alloy Survival Whistle

This outdoor survival whistle is made of high quality aluminum alloy material. Each emergency whistle is equipped with a round key chain ring for attachment to a lanyard or keys, you can also attach it to your wallet and bags, portable design, convenient to carry with you everywhere, especially convenient for outdoor activities. Allowing others to quickly confirm your location and get quick rescue, great tools for camping, hiking, hunting, mountain climbing, boating and other outdoor sports activities. 2 13/64" L x 19/32" W