Generic Emergency Personal Alarm Keychain - Safety / Attack / Protection / Panic / Self Defense Portable 120db Alarm - For Student, Jogger, Elderly, Kids, Women-Handbag Decoration 120-decibel ear-piercing panic alarm. Simply pull the pin, and this ear-piercing alarm will activate. The simple design and ease of use makes the Personal Security Keychain Alarm ideal for all ages. Acts as a portable security solution that delivers peace of mind wherever you go. Convenient keychain design is perfect for use with house keys or car keys.