Vehicle GPS Tracker Two Way Communication

This is a real time GPS tracking devices for all kinds of vehicle monitoring.  Vehicle can be monitored and remote controled if any theft or accident happens. With speaker and microphone, there can be 2 way talk between monitoring center and driver.

You can call to warn the theft while he is trying to steal the vehicle.

Single Locating: Auto track continuously
GPS drift suppression 
Exact street address
Monitor
Data logging: Required SD card 
Data load
Forward the third parties' message 
Cut off oil and power system
Geo-fence
Multi-area management
Fuel / Movement / Over speed alarm
Turning points update automatically:This function is only effective in GPRS mode 
Location based service (LBS) / Cell-ID locating: This feature can be used normally in most areas according to the signal of GSM network. It may not be available in some areas 
Alarms-Power off alarm & low battery alarm: Tracker'll send SMS to authorized numbers 
SOS: Press the SOS button 3 seconds, tracker'll send SMS to all authorized numbers 
Door open alarm , the tracker cannot close door

Network: GSM/GPRS 
Band: 850/900/1800/1900Mhz 
GSM/GPRS module: Simcom300d or Simcom340d 
GPS module: SIRF3 chip 
GPS sensitivity: -159dBm 
GPS accuracy: 5m 
GPS start time: Cold status 45s; Warm status 35s; Hot status 1s 
Backup Battery: Rechargeable 3.7V 500mAh Li-ion battery 
Storage Temperature: -40°C to +85°C(-40F~185F) 
Operation Temperature: -20°C to +65°C(-4F~149F) 
Item size: 8.3 * 5.5 * 2.5cm (3.3 * 2.2 * 1.0in) 
Item weight: 112g/4oz