• Build-in SirfIII GPS module . High sensitivity
• GSM/GPRS 4 Band ,SMS/TCP/UDP connection. Works worldwide! 
• Excellent for fixing the position even at a weak signal status. 
• Work well even in areas with limited sky view like urban canyons. 
• Compact size, and smaller than one name card. Easy to hide
• Very Low power consumption
• Fast Signal Acquisition