In case of emergency, you can use SOS Emergency GPS to send signals.
+++++Features+++++
*Emergency light with red and blue patterns, kinds of real police siren sounds is also available.
*Your real-time location will be sent when you touch the button of "sending message".
*Glow sticks can be used to attract attention when at night.
*The flash frequency of the SOS emergency light is adjustable to distinguish urgency degree.