portable gps tracker, gps tracking unit 1)Auto Report position, Send the last location 2) ... tracker, portable gps tracker, gps tracking unitGPS Tracker 1021 Summary Working Based on existing GSM/GPRS network and GPS satellites, this product ... /GPRSBand850/900/1800/1900Mhz or 900/1800/1900MhzGPS chipSIRF3 chipGSM/GPRS moduleSimcom Sim340 or Simcom Sim300GPS sensitivity-159dBmGPS accuracy5mTime To First ...