Global GPS Personal Tracker with Two Way Calling + SMS Alerts

Manufacturer Specifications
Primary Function: Quadband GPS Tracker with SMS and Two Way Calling 
GSM Module: GSM 850/900/1800/1900Mhz 
GPS Chipset: GPS SIRF-Star III chipset 
GPS Sensitivity -158Db 
GPS Frequency: L1, 1575.42 MHz 
Position Accuracy: 10 meters, 2D RMS 
Velocity Accuracy: 0.1 m/s 
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's 
Power Source: Li-ion Rechargeable Battery (800mAh) 
Charging: Power adapter or mini USB 
Operating Temperature: -20 to 55 C 
Humidity: 5% to 95% 
Dimensions: L:76 x W:52 x D:25 (mm) 
Wholesale Electronics Ref.: WholesaleGPS085ED23LF 

Notes from Manufacturers

Accurately position your location to 10meters 
Also provides GPS speed data for object velocity. 
Works at an altitude of 18,000 meters (60,000 feet) 
3 buttons (SOS/B/C) for making phone calls or sending SMS 
Work time 60 hours in sleep mode and 12 hours in normal mode 
3 LED lights to show power, GPS, GSM and other operation status 
SOS button to send SMS help message to paired cellphone number. 
CD contains user manual for many similar models. Please use the GT30 manual for this product. 
The USB cable is for charging the product and not for interfacing with Google Earth. Manually input coordinates received via SMS into Google Earth to visually track objects. 

Package List

Quadband GPS Tracker 
USB Cable 
Car Charger 
Earphones Headset with MIC 
Power Adapter (100V-240V 50/60Hz) 
CD Containing - User Manual (English)