Feel and stay safer with a keyring alarm that looks unassuming but packs a powerful 130-decibel alert.

Pull the top to activate an attention-drawing sound that is as loud as a jet taking off or a jackhammer in action. Trust us, it is ear-splitting. The alarm is reusable—just pop the pin back to stop the sound.

Maker Michael Su modeled the low-key design on a traditional key fob so it can be attached to a keychain, bag, or worn on a lanyard. There are styles suited for kids and it’s TSA-friendly, too.

The alarm can do the job of warding off unwanted attention and works as a call for help as well. It is handy in so many situations for so many types of people—nighttime runners and commuters, campers, students, elderly folks—that we couldn’t think of anyone who wouldn’t benefit from this small, but powerful alarm.