Function :

1.GPS/LBS/WiFi AGPS High Accuracy tracking:Positioning by many ways
2.Voice chatting:You can send voice chatting by app in the "chat column"
3.Two way calling:Inserting the mobile phone card to the device,then the device can call to the 13 members set up on the app.
4.History of location:on the app footprint column you can insert the time to show the replay to know the kids walking trails.
5.Safety fence:On the app "geofence column" you can set a geofence when the kids go in or go out,it will make a alarm to remind you.
6.SOS for helping:The child can touch the SOS key over 3s to make a SOS call to the helper.
7.Voice monitor:Setting monitoring number on the app then can remote voice monitor the children situation. 
9.Add friend:The child who use the device open the make friend function and touch it to another kids device for it,then they will make friend on the device.
10.Phone book :You can set up 10-15 members on the phone books.
12.Rewards:The parents can reward the children when they in good behavior.
13.Setting clock:Setting clock on the app when you need it.
14.Flashlight :When go into the dark situation,the child can open the frashlight to see something.
15.stopwatch:If the device insert the the card the child can not stop the watch by the device,only the parents use password to login the app can remote stop the watch.