​SOS working method is : once user press GPS SOS panic button in emergency situation, the device will auto call SOS bound 3 phone numbers in app in 2 rounds until anyone number pick up;meanwhile send SOS SMS alerts with Googlemap GPS position URL and syncs the SOS notification to server end and app end; GPS get the position from satellites (outdoor) ,or get position from( Indoor)LBS or WIFI , syncs the datas to server , server syncs the datas to phone app ,GPS is mini phone system , work with phone app for voice call , intercom chatting and Video call if firmware support(4G) , this is phone to phone working method, if the sim card in the GPS is available for international roaming, then GPS is ok for global monitoring. All working features in the app. Regarding the emergency call, Please kindly note all our GPS with panic SOS button for emergency call once the user in an emergency situation

OKYWATCH in Spain for kids safety

Server Configuration Guide, Please kindly referr to our protocol detail and configuration all the necessary features on your server portal ,The most important is the device send whatever Linkkeep, your server need reply or confirm the Linkkeep for maintenance the network connection,the server is TCP/IP socket server , all GPRS communications , NO UDP

Why gps tracker need sim card? --GPS device is a mini Featured phone system , just without the keyboard .GPS device system consist of mini phone system+GPS modue +Wifi modue.GPS device work with smart phone app and Cloud server , all GPRS communications via. Sim card through Operator Cellular 's network. It's available for global real time and real Googlemap tracking if the sim is available for international roaming. GPS work with smart phone app is phone to phone. --Any GPS Tracker has a receiver to triangulate its own position from the satellite signals. All the GPS trackers need a SIM card in order to achieve connectivity. SIM cards are what allow location transmission, sending audio data, and receiving commands to turn on audio and other advanced features.

GPS Bracelet with heart rate and SOS GPS Bracelet with heart rate and SOS GPS Bracelet with heart rate and SOS Senior Healthcare GPS Bracelet with heart rate blood pressure SPO2 monitoring , temperature thermometer sensor, 4G IP67 waterproof Senior Healthcare GPS Bracelet with heart rate .blood pressure monitoring and Temperature measuring All health data (HR/BP/SPO2/Temperature)saved in Beesure GPS app for 30days: Manual measure on device end OR Remote measure in phone app end , both available

OEM Customized Branded App for Oversea clients