Eastlion Alarm Police Strength Keychain Blue Footprint Shape for Women,the Old,Children Blue Light weight but strong, compact and sturdy keychain Simply pull the pin, and this ear-piercing alarm will activate for up to 40 minutes of continuous sound It is not a adornment but also a alarm. Most user-friendly - sleek, modern and compact design. Keychain attaches to backpack, purse, etc. for convenient, instant access plus greater value with batteries included