SCURRY Emergency Whistle With Vital Information Note Inside: TW-32112-Z04 : (Pack of 2 Pcs.) Lightweight, all aluminum construction with a handy key ring You can attach this whistle to your key ring, or wear around the neck on a string The whistle bears the words "In case of emergency, open capsule" Inside the capluse is a rolled note you can write your name, and emergency information This note could save your life if you have a dangerous allergy or heart condition