GF21 GPS Tracker User Manual
Specification:Type: GPS TrackerNetwork: GPS/GSM/LBS/WIFIBattery Type: 3.7V 500mA Li-ion BatteryCharging Voltage: DC 5VFrequency: 850/900/1800/1900MHzCharging Input: AC 110-220V 50/60HzGPS Positioning Accuracy: About 10m/32.80FTStandby Time: 10 DaysWork Time: 4-6 DaysExpansion Card:…