["Features:\nLocation query: the user’s specific location can be queried via mobile phone or computer\nElectronic fence: delineate an area on the map with the device as the center, and alarm immediately when the area is out\nHistorical trajectory: query the equipment running trajectory within three months, anywhere\nSOS for help: In for case of emergency, press the SOS button to send a distress call and message to the guardian\nAddress book: add/check supervision numbers (SOS, father, mother)/whitelist/friends (50 in total) through the guardian’s mobile APP\nTwo-way conversation: when the address book number comes in, you can talk to the user\nFind device: If the device is lost, the device can be found through the mobile APP\nDevice alarm: set through the guardian’s mobile APP\nClass anti-disturbance mode: set the do not disturb for time range through the guardian’s mobile APP, and the device will block incoming calls\nRemote shutdown: the device shutdown function can be realized through the guardian's mobile APP\nRemote restart: the device restart function can be realized through the guardian's mobile APP\nfor Smart power saving: turn off/on GPS and data upload within the for time frame\nMobile client/computer service platform/GZH, multiple control methods\n\nSpecification:\nMultiple positioning modes: GPS + AGPS + Wifi + Beidou + LBS\nUniversal GSM+GPRS quad-band system: 850/900/1800/1900MHz\nBattery capacity: 5000mAh\nProduct size: 80*45*30mm\nStandby time: 90 days\nWaterproof: IP67 Waterproof\nQuantity:1Pc\n\nNote:1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.\n 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:(No Retail Packages)\n1 x GPS Tracker"]