Adafruit FONA - Mini Cellular GSM Breakout uFL Version

Key Features Quad-band 850/900/1800/1900MHz - connect onto any global GSM network with any 2G SIM (in the USA, T-Mobile is suggested) Make and receive voice calls using a headset OR an external 8O speaker + electret microphone Send and receive SMS messages Send and receive GPRS data (TCP/IP, HTTP, etc.) Ring, Ring! Who's that callin'? It's your breadboard! Introducing Adafruit FONA MiniGSM, an adorable all-in-one cellular phone module that lets you add voice, text, SMS and data to your project in an adorable little package.This module measures only 1.75"x1.25" but packs a surprising amount of technology into its little frame. At the heart is a GSM cellular module (we use the latest SIM800) the size of a postage stamp. This module can do just about everything. On its own, this module can't do anything. It requires a microcontroller to drive it! We suggest and use an Arduino but any 3-5V microcontroller with a UART can send and receive commands over the RX/TX pins.Item SpecificsDimensions w/Components: 45mm x 34mm x 8mm / 1.8" x 1.3" x 0.3"Dimensions of PCB: 45mm x 32mm x 2mm / 1.8" x 1.3" x .1"Weight: 9.0gRequired (not included):SIM Card, Lipoly Battery - 500mAh or larger, MicroUSB cable, External Antenna.Recommended (not included): TRRS 4-Pole Headset, External Mic & Speaker, Vibrating motor, USB console cable