GPS module:SIRF III 20 channels
GSM/GPRS module:850/1800/1900Mhz or 900/1800/1900Mhz or 850/900/1800/1900
Protocol:NMEA-0183 compliant protocol
GPS Antenna:Build-in active high sensitivity antenna
Accuracy:5m
Start time:Cold start: 42s
                   Warm start: 35s
                   Hot start : 1s
Operating Voltage:3.3V
Charge voltage:4.5~5V
Standby:15mA
Operating:80mA
Battery:Polymer Li-ion 1100mAh (built-in)
Standby ：80hours
Storage Temp ：-40°C to +85°C
Operation Temp ：-20°C to +55°C
Humidity 5%--95% non-condensing