V680B is a by GPS and GSM / GPRS modules for personal remote positioning device, it is smart size, high accuracy. On the basis of the GPS satellites, in the dynamic conditions to provide you precise location information. You can use these features to protect and look for the elderly and children. And you can use it as a security purpose and other purposes, such as the need to protect the property of the remote location and location.
First, the product features
1. Built-in GPS module
2. Internet location service center for sending and receiving location information
3. GPS positioning individual or team
4. GSM / GPRS modem, 850/900/1800/1900MHz
5. High sensitivity, new technology and most advanced GPS chip
6. In the limited space under the narrow areas such as the city works well
7. Low-energy
8. Fast capture signal
9. To support a single location and continuous positioning
10. Support alarm and remote positioning
11. Support the speed dial button
12. Support the location information query message and the Internet
13. To the holders of the positioning by phone or SMS
14. In an emergency SOS button, precise location can be
 
Second, product specifications
1 Technical Specifications
GSM module

  GSM850/900/1800/1900 MHz
GPS sensitivity of-163dBm
Center frequency of GPS L1, 1575.42MHz
GPS positioning accuracy of 5-25 meters
GSM positioning accuracy of 100-500 m
Velocity Accuracy 0.1 m / s
Accuracy and GPS time synchronization
Default WGS-84 data
Hot start 1 sec
Warm start 38 seconds
Maximum altitude of 18,000 meters
Maximum speed of 515 m / s
Acceleration of gravity <4g