Aluminum Alloy Emergency Whistle

The aluminum alloy whistle made of aluminum alloy, not easy to fade, can serve you for a long time. the things are small and sturdy, can be hung on the keychain as an ornament, conveninent to use, suitable size for your use and storage. The aluminum alloy outdoor survival whistle blows loudly, the sound is loud, and the transmission distance is long, can be heard from a long distance. The whistle can be nice gifts for friends who want to travel, or people who need attention to ask for help in an emergency.