General features :Tri-Band GSM/GPRS 900/1800/1900MHz(SIM300C)   
                                  Quad-Band GSM/GPRS 850/900/1800/1900MHz
                                   (SIM340C)  
                                 Dimensions: 50mm x 33mm x 6.2mm   
                                 DIP type board-to-board connector suit for vehicle   
                                                                    
Application：1:Vehicle carries and ship carries security monitoring machine 
                          2:Long-distance monitor 
                           3:Data acquisition 
                           4:The wireless water, the electricity, the gas copy

support:

The company may provide the vehicle  carries security, the vehicle to carry the guidance box 
               plan.

Accessory：Module Connector、RF Cable、 Antenna、SIM Card Holder