Features: Brand new and high quality Main Functions: Supports real-time GPS/AGPS/WIFI/LBS positioning, SOS assistance, vibration alarm, calling family numbers, pedometer, electronic fence warning reminder, historical track query, alarm clock, class mode, power saving mode. Chip: MT2503/MTK3333/MTK5931. Multiple Positioning Modes: GPS + AGPS + Wifi + Beidou + LBS. Universal GSM+GPRS Quad-band System: 850/900/1800/1900MHz. Location Query: User's specific location can be queried via a mobile phone or computer. Electronic Fence: Define an area on the map with the device as the center and alarm immediately when the area is left. Specifications: Material: PCB Size: Approx. 35x20x4.5mm/1.38x0.79x0.18in Weight: 16g Note: Please allow 1mm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x GPS Tracker