SABRE Personal Self-Defense Safety Alarm on Key Ring with LOUD Dual Alarm Siren Heard up to 600 ft/185 meters Away. To Use, Pull Metal Chain from Base

Provides peace of mind while walking alone, by easily attaching to bags, backpacks, keychains or purses
Very loud 110db-dual siren design alerts for help immediately
Great range-alarm audible up to 300′ (100meters) away
Easy to use-simply pull the alarm off of the keychain
Sabre personal safety alarm is perfect for; college students, moms, runners, seniors, service industry personnel, commuters and nurses