The emergency whistle is made of aluminum alloy, the whistles are not easy to fade, can serve you for a long time. It is small and sturdy, can be hung on the keychain as an ornament, convenient 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.
It can be nice gifts for friends who want to travel, or people who need attention to ask for help in an emergency. When traveling outdoors, it can confirm your location, avoid getting lost, find a companion, and provide assistance, can be applied in emergencies, referees, training, sports and so on.