KOOTIPS Loud Version Portable Brass Emergency Whistle, Classic EDC Tool Collection, Mini Survival Whistle with Key Chain (Mirror models) Features a bold, crisp sound Great for sporting events, training, lifeguard, self-defense, survival, emergency, etc Easy to Use:Survival emergency whistle with key ring,Portable and convenient Looks like little item,but potentially important one, this Emergency Whistle & Keychain could be a life-saver.A Very Nice Aluminum Emergency Survival Whistle Key Chain Camping,fit outdoor activity, camping, fishing, hiking, traveling, keychain etc ! Practical:Loud whistle can be heard for far distance,great for sporting events, camping & hiking,boating