These days, a number of companies are making portable safety alarms, that are no bigger than a keychain (some of them also double as keychains). Whereas smoke alarms, for example, can be big and ...

Usually about the size of a keychain, personal safety alarms are small devices that emit a loud sound — even as high as 130 decibels. With either the push of a button or the pull of a cord ...

A personal safety alarm can save ... most subtle and stylish personal alarm she’s ever seen. It’s small and lightweight, and comes with an elegant brass keychain. Parker keeps it clipped ...