A key to SOS distress, in an emergency, press the SOS button, namely to guardian sent a distress message. GPS satellites and dual monitoring base station positioning all real-time positioning tracking. Remote monitoring, high sensitivity of the microphone, the users in emergency, the voice of the real-time monitoring equipment around.

Users can call each other and can set up three affection real-time call numbers. Equipment centered on the map drawn an area, the area of the APP, and a short message alarm immediately. Time shows that GPS precise GPS clock doesn't need to manually adjust the time.