1. One key for help: In case of emergency, press this button to send a distress message to that guardian. 2. Positioning: Base station monitoring and positioning realize real-time positioning and around-the-clock tracking. 3. Smart power saving: GPS off power saving mode (selection) 4. Remote Monitoring: High sensitive microphone can monitor this voice around this device in real time when this user has an emergency. 5. Two-way conversation: Users can talk to each other, and 4 family numbers can be set to talk in real time. 6. Electronic Fence: Set an area on that map with this device as the center, APP and SMS will alarm immediately when you are out of this area. 7. Historical track: Query the running track within three months anytime, anywhere. 8. Time display: GPRS time service is accurate, no need to manually adjust that time. the description: That is the best gift for children to ensure their safety and accompany their growth at any time