King of long time standby GPS tracking device built in GPS/GSM antennas with listen in function

Long time standby GPS tracker built in GPS&GSM antenna --AVL10 Applications: 1.GPS car tracker        
2.Vehicle Security/Recover/Anti-hijacking      
3.Mobile Asset Tracking, Location-based Services     
4.Fleet Management: car, taxi, bus, truck etc.     
      Description:       1.Easy to install in the car     
2.Built-in antenna and battery     
3.Track by software/by cell phone     
4.Over-speed alarm, Low power alarm, Geo-fence alarm      
5.Roaming feature to save cost     
6.Control or detect the car doors/engine on/off     
7.Cut off the  engine power Gradually and safely when in urgency     
8.GPRS(TCP/UDP), SMS Support     
9.OTA, upgrade the firmware via GPRS      10.Long standby time           Special Features:    1. Long time Standby more than  three months     
2.  Support commands to device via GPRS     
3.  SMS Link for google map     
4.  Sending GPRS data to IP or DNS     
5.  32Mb Flash Memory     
6.  Fuel/oil level detection     
7.  Temperature sensors     
8 .With Microphone and listen-in function     
9. button A can to dial the specified phone     Specifications:    

Feature	Characteristics
Dimension	122mm*81mm*30.8mm
Exterior Power Supply	DC 9V -- 36V
USB charge	5V
Inner lithium battery	DC 3.6V -- 4.2V/4500mah
the Built-in GSM antenna	Receive GSM Signal better
the Built-in GPS antenna	Receive GPS signal better
Power Consumption when exterior voltage is 12V	Active mode(avg.) < 50mA         Sleep mode     < 5mA
Charging time	About 6 hours can be full
Standby Time	More than 3 months
Air pressure	860Kpa --1060Kpa
Humidity	Up to 75% non-condensing
Position accuracy	10 --15 meters
GSM chip	QUECTEL M35 ( 4 Frequency GSM 850/ 900/1800 /1900MHZ is optional)
GPS chip	LOCOSYS(super-sensitivity and high accuracy )
LED	3 LEDs indicates GSM signal, GPS signal, and change
Button	2 buttons, SOS button and button A