Elprico Development Board Kit, Module Kit with Quad-Band 850/900/1800/1900 MHz, USB Connectivity, 802.11G Wireless Standard, Includes & GSM Antenna

【Baud Rate】- The best baud rate for GPRS Shield communication is 19200 BPS 8-n-1 (GPRS Shield automatically matches baud rate by default). 【Feature】- RTC supported; Selectable serial port; With speaker and Headphone jacks; Low power consumption: 1.5mA(sleep mode) 【Control via AT commands】- Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands. 【Embedded UDP stack】- allows you to upload data to a web server. 【Four Frequency Range】- Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world.