Mace Brand Personal Alarm Keychain Black

The alarm is activated by depressing the button on the front of the alarm, but a different button on the back of the unit is the only way to deactivate and silence the alarm. In situations where seconds make a difference between life and death - the ease of activation combined with the "hidden" off button make this alarm an easy to use, and hard to defeat personal alarm. (3) x 1.5V AG13/LR44 batteries included.