日韩三区在线_日韩三区在线观看_日韩色电影_日韩射吧_成人免费视频视频_成人免费视频视频在线观看 免费

2017 newest min pocket watch gps tracker 
Spec:
Compatibles with Android and IOS phone
GPS+BD+WIFI +LBS dual positioning
Real-time tracking on Google map
Geofence,automatic alarm when out of range
Historical route of three monthes
SOS emergency button
Two way communication
 Technical Parameters:
 Chipset MTK MT2503
Built-in high sensitivity ceramic antenna
GPS+Beidou+WIFI+LBS multi-mode positioning
Built-in four frequency PIFA antenna
GPRS: Class12
GPS Positioning accuracy 5~15m
Build-in MIC and speaker
Button (power button and SOS button) 
Size:44X12mm
Battery: 400mAh
Standby time: 4days. Utility time: 3days