The Mace® Personal Panic Alarm is just what you need for everyday safety. The small and portable alarm attaches to your keys and easily fits in your pocket to provide access to a screeching 130dB alarm. When threatened, simply press the activation button on the front to trigger the alarm and press the deactivation button on the back to turn it off. There is also a built-in whistle in the body of the alarm for increasing your ability to call for help and scare off attackers, even if the batteries for the alarm should die.