Built-in GPS personal locator
   Frequency: GSM 900/1800/1900MHz or GSM 850/900/1800/1900MHz
   Child/the Elderly/Pet Protection and Tracking
   Vehicle Tracking and Management
   Accurate GPS Satellite Positioning
   SOS Emergency Button
   Speed-dial Buttons
   SMS Support on any GSM Network
   Support GPRS Tracking

Structure picture:

  Specifications :                                                            

Dimension	76 mm × 46 mm × 25 mm
Weight	120g
GSM module	GSM 900/1800/1900Mhz or GSM 850/900/1800/1900Mhz
GPS Chipset	latest GPS SIRF-Star III chipset
GPS Sensitivity	-158Db
GPS Frequency	L1, 1575.42 MHz
C/A Code	1.023 MHz chip rate
Channels	20 channel all-in-view tracking
Position Accuracy	10 meters, 2D RMS
Velocity Accuracy	0.1 m/s
Time Accuracy	1 us synchronized to GPS time
Default datum	WGS-84
Reacquisition	0.1 sec., average
Hot start	1 sec., average
Warm start	38 sec., average
Cold start	42 sec., average
Altitude Limit	18,000 meters (60,000 feet) max.
Velocity Limit	515 meters/second (1000 knots) max.
Acceleration Limit	Less than 4g
Jerk Limit	20 m/sec
Operating temperature	-25° to 65° C
Humidity	5% to 95% Non-condensing
Voltage	Rechargeable 1300mAh battery (3.7V), 5V for charging input.
Charging connector	DC 5V (USB port)
Standby time	50 hours
LED	3 LED lights to show power, GPS, GSM and other operation status.
Button	3 buttons for SOS Emergency call, speed dial call B, and speed dial call C

USER MANUAL .pdf