Notes:1. App (SeTracker) system required android (os 3.0 or above)， iphone (ios 6.0 or above)2. Saving telephone numbers in the SeTracker App setting's telephone， kids can answer and receive calls ， but when saving in the contacts， kids can only receinve calls， can't make calls!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 watchIf 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.Basic Information Brand :Excelvan Model :Q50 Color :Red ，Blue， GreebWristband Material:Silicone Net Weight :39g Technology Information Cellular BandGSM 850/900/1800/1900MHz (support 2G ， do not compatible with 3G or 4G network) SIM Card:OneService ProvideUnlocked Operating System :MTK G CPU: MTK 6261 364MHz Display :0.96 " OLED 128x64 Speaker :8��/0.5W MIC :Built-in hi-fi MIC Communication: GSM��GPRS Location :GPS��LBS Telephone :Support SMS Alert :Support��Need to install software�� Remote Monitoring :Support��Need to install software�� SOS Alarm :Support Step Counter: Support Acceleration Sensor :Support Remote upgrade :Support Remote debugging :Support Low power management :Support Battery Battery capacity:400mAh Battery Types :Lithium-ion polymer battery_3.7V PackageSize:9 x 9.5 x 7 cm Weight:143g Package contents:1 x Smart Watch 1 x USB Charging Cable 1 x Screwdiver 2 x Screw 1 x User Manual