... 4.4MB data logger, digital input, output VT310 GPS tracker,gprs car tracking system,AVL,gsm locator,GPS tracking systemCurrent location reportTracking by time interval8M internal flash ... of 10 bits resolution Standard Accessories: 1 GPS antenna1 GSM antenna1 Set of wirings1 USB cable1 Microphone1 relay1 CD gps vehicle tracker,gps car tracking system,AVL,gsm locator,GPS tracking system