Feature:
Activating the alarm is as simple as pulling out the pin, which triggers a loud noise. The alarm will cease only when the pin is plugged back into the unit, and it won't fall out on its own, as it requires manual removal by a person.
To avoid possible temporary hearing impairment and discomfort, refrain from holding the personal alarm keychain near your ear when checking the volume.

Basic information:
Material: plastic
Color: blue, yellow, black, red, pink

Package include:
16 x Personal alarms

Notes:
Manual measurement, please check the size before purchasing.
Please use in conjunction with the instructions.