... continuous positioning, GPRS timing interval;Send GPRS data to IP or Domain;Send commands to GPS trackers via GPRS;Location ... 10mm / 1%;Send commands to GPS trackers via GPRSAlarm types: Over-speed, Low power, Geo-fence,Tremble, Parking, SOS,exterior power ... Support;Sleep mode for Saving Power and GPRS traffic (Build in viberation sensor;);Backup battery;Two way voice communication;GPS antenna drop ...