1.Binding the number firstly to make sure you can receive the alarm calling.
2.Four frequency global apply, no distance limit.
3.Has voice monitoring and magnetic two prominent functions.
4.Provide free remote location function to make sure keep your valuables safe anytime and anywhere.
5.Small size, clear voice, long standby time, simple operation, stable performance, exempt driver, wireless, 
remote control etc.
6.Technical Data:
  Size:8.2cm*3.8cm*1.0cm
  Battery: Lithium polymer 500mA.
  Operating frequency: 850/900/1800/1900MHz.
  Standby time:7-15days(according to the strength of local network signal)