This kids Smart Watch not only have the children's safe postion function but also have the common smart bracelet's function， such as sport monitoring， sleeping monitoring and alarms. Of coure， the Safety is the first priority especially for the children. As a kids Safe smart watch， it has GPS and LBS double location for accurate position. It is also a quad band GSM (850MHz， 900MHz， 1800MHz， 1900MHz) unlocked phone that can be used anywhere all over the world. Sticking in a 2G SIM card and you can call on your wrist. Positioning principle:The GPS Tracker Smart Watch is located by GPS or LBS. The positioning data will be transfered to the GPS service platform by GPRS. Then GPS Service platform will transfer the data to the smart watch's APP which binded by the ID. Main Features:1. Accurate LocationWe use GPS and LBS double location for accurate position. 2. Safe Incoming Callsa. After setting SOS/Family number， Contacts， Telephone numbers in the APP， kids can only receive calls from the setting numbers. Not from STRANGER! b. Kids can press SOS or familiarity number button to call you! 3. Walkie TalkieBy this function， you can have voice conversation between smart watch and app. Send voice message over app or watch recording message send to phone's app all is available! 4. Safty ZoneThe Min. fence radius is within 500 meters， if the watch user walked out of the range， your phone will received and alert. 5. PedometerIt's also can record your dear bay's steps， calories and distance. Let you know baby's sports data， adjust exercise program and get healthier life! 6. Sleeping MonitiringThe smart watch will record your baby's turnover times， you can check the related data through the APP. 7. History RoutePath query in the your children's historical activities by the choose the periond. 8. Find the watchIf the watch is not nearby， send this command， the watch will start to ring for 1 mins so that you can easily find it， press any button will stop the ringer. 9. Message Alerta. Low-voltage remindb. SOS remindc. Take off watch If you set the telephone number in the APP's "SMS alerts setting"， you will received message when occur the above 3 conditions. 10. Listen to kidsIf you miss your baby， you can listen to them without disturbing them. 11. AlarmYou can set 3 different alarms as your child's requirements! 12. Remote Shutting DownYou can remote controlled the smart watch power off via APP. 13. Anti-lostAfter registered your smart watch in the phone and the APP is on-line， if someone take off the watch from your children's wrist， you phone will alert to remind you. 14. App' LanguageThe App's language support English， Chinese， Portuguese， Spanish， German， Turkish， Vietnamese， Russian， French， Indonesian， Malay， Dutch， Danish， Polish etc. Package included:1*Watch1*Charge cable1*Manual1*Gift box Note:1，When the Watch is in the room， GPS positioning method is unable to used because of its weak signal(you can Google about that all GPS device can not Use GPS Mode in buildings). At this moment the positioning mode is LBS. LBS's positioning accuracy depends on the the LBS Service of SIM Card Operators. Such as the quantity of base station. GPS positioning method can be used outdoor. 2， SIM Card's Network Frequency must be 850/900/1800/1900MHz. 3G/4G network can not be used. Usage:1， Purchase SIM card， establish GPRS service. Put SIM Card in the Watch. SIM card must be GSM card. 2， Download and install the APP on your Smart Phone. Landing APP on Phone by the ID of smart watch.The detail please read the User's Manual in the