Features: 1. the volume is ultra-small, GPS is positioned within 10 meters, and can be positioned globally. 2. the call is clear, remote control. 3. computer, mobile APP view baby and convenient. 4. set up an administrative account, managing multiple devices is more convenient. Specification: Multiple positioning modes: GPS + AGPS + Wifi + Beidou + LBS Product size: 80*45*30mm Battery capacity: 5000 mAh Universal GSM+GPRS quad-band system: 850/900/1800/1900MHz Location query: the user's specific location can be queried via mobile phone or computer Electronic fence: delineate an area on the map with the device as the center, and alarm immediately when the area is out Historical trajectory: query the equipment running trajectory within three months any for time, anywhere SOS for help: In an emergency, press the SOS button to send a distress call and message to the guardian Contacts: add/check supervision numbers (SOS, father, mother)/whitelist/friends (50 in total) through the guardian's mobile APP Two-way conversation: when the address book number comes in, you can talk to the user Find device: If the device is lost, the device can be found through the mobile APP Device alarm: set through the guardian's mobile APP Class anti-disturbance mode: set the do not disturb for time range through the guardian's mobile APP, and the device will block incoming calls Remote shutdown: the device shutdown function can be realized through the guardian's mobile APP Remote restart: The device restart function can be realized through the guardian's mobile APP for Smart power saving: turn off/on GPS and data upload within the for time frame Mobile client/computer service platform/GZH, multiple control methods Quantity:1 Set Note: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes:(No Retail Packages) 1 X GPS Tracker 1 X Collar for Animals 1 X Cable for charge 1 X Use manual