This device is for those who are worried about their safety. It is suitable for individual use, and is especially good for kids, teens, students and women thanks to its funny design. The device fits easily in your pocket, and when you turn it on, it creates an audio signal like the sound of a police siren. Volume of the signal is enough to attract the attention of other people. It produces 120dB. It has a small size and is light-weight. It is equipped with a metal pull pin. When you need help, you can pull out the metal pull pin and it emits an alarm sound.