Model N/A Quantity 1 Color White Material FR4 half glass fiber board Features EFCom Pro is a 4 frequency GPRS module supports 850/900/1800/1900MHz; Supports all the functions on cell phone such as sending SMS making call fax etc. You will learn fast about development process of cell phones and processing wireless development with this module Specification A type of GSM/GPRS Integrated single chip base on SIM900; Adopt ARM926EJ-S; Power supply: 5V; Fully compatible with AVR/Arduino/ARM/FPGA development board Application Great for DIY projects Packing List 1 x Module 1 x Antenna 4 x Copper cylinder