Main functions: 1) SOS Call: After binding the watch with the APP, your child cancontact you directly in emergency by pressing 3 seconds the SOS button on the watch. Parents can settle up to 3 SOS numbers including the SOS service number. 2) GPS Location: With this function, you can easily find where the child is and where has he been in the recent days. 3) Monitor:You can hear the environment of your child to make sure that he or she is not in dangerous situations. Before using, please make sure that this function complies with relevant local laws and regulations 4) Security Zone:whenever your child is out of the security zone which you have settled, the app will send an alarm message to you. Attention: the phone number registered in the App should be the monitor’s phone number Before connect the watch, please make sure: 1. The watch is on, and the time and date are synchronized with the SIM card network 2. Calling signal icon and network signal icon are showed on the screen. 3. This app can just ensurein some degree the security of your child, but no absolute secure.