Our key chain alarm is small, compact, easy to carry and conceal anywhere. Should you need to draw attention to yourself if attacked, or possibly a medical emergency, just press the panic button and the key chain alarm will emit an ear piercing 118 decibel scream that is guaranteed to attract attention! This unique compact alarm has two functioning modes : 1) By slightly pressing the alarm button, you can sound a warning chirp; 2) Depress the button completely, and you will sound the continuous 118 dB alarm. This item also has a built in light to aid in finding the keyhole on your car or assisting you into gaining entry into a door in the dark. Battery included. Size : 2 1/2 x 1 1/4 x .