Narinco- SIM808 Module GSM GPRS GPS Development Board IPX SMA with GPS Breakout Arduino
Ai-Thinker Cheap GPS GSM GPRS Module Wireless Transmission A9G Development Board with USB, View gps development board a multi-functional development board based on AI-Thinker's A9G GPRS/ GSM module, Ai-Thinker Product Details from
A7 GSM/GPRS/GPS Module - Invent Electronics
SIM808 GPS GSM GPRS Module - Robotech Shop
SIM 808 GPRS/GSM module with GPS antenna – AZ-Delivery