Wrist Tracker is a stylish device with built-in GPS and GSM modules and high performance antenna. System setting is both by SMS and USB socket. LCD screen displays system setting/coordination data/satellite indicator etc. It can transmit the longitude and latitude coordinate to your cell phone by the short message service, then you can find its location on the free Google maps? or any other map software. Also it can be tracked online at real time by GPRS. Find maximum 6 friend's position on the screen by the ditection arrow and distance indication. Calculate your exhaused calorie under running or cycling mode. Data Logger function saves up to 27000 points, record all routes and maps into Google Earth.
Features

1. GPS SiRF-Star III chipset fast fixing the position even at a weak signal status.

2. Works worldwide! Support 4-frequency GSM 850/900/1800/1900 MHZ.

3. Receive phone calls and SMS and GPRS in three way communications.

4. System setting by SMS or USB or softkepboard, to connect and use PC software interface

5. SOS button send out exact location for immediate rescue/action. Via SMS to 1 to 5 preset numbers.

6. The wrist tracker can report the position under ordered-frequency and work in interval-based saving power mode.

7. Geo-fence alarm, setup geo-fence areas in case of lost!

8. Speed limit alarm

9. Multi-user management on website. (GPRS mode or SMS modem mode) Applications Fitness, Sports and Trail Kid/Senior protection Asset tracking Out door staff management
Geographic Surveying

Specification
GSM/GPRS
GSM/GPRS module? Sincom300 Tri-Band GSM module (GSM900/1800/1900MHz)
GSM Antenna Build-in
Protocol Support HTTP and TCP transmission
GPS
GPS module SRIF III 20 channels
Protocol NMEA-0183 compliant protocol
GPS Antenna Build-in active high sensitivity antenna
Accuracy 1-5m
Update rate 1 HZ
Start time Cold start: 42s Warm start: 35s Hot start : 1s
Electrical
Operating Voltage 3.4-4.5V
Charge voltage 4.5~5V
Standby 25mA
Operating 70mA
Build in Battery Li-ion 1000mAh
Working time 10hours
other
Product Size 59*38*18mm
Weight 45g(including battery)
Box Size 17.5cm*12cm*8.5cm
Weight 240g
Carton Size 53cm*38cm*47cm(for 40pcs)
Weight 12KG