Evalution Board, Adafruit FONA, Mini Cellular GSM Breakout uFL Version Kit that requires soldering Quad-band 850/900/1800/1900MHz - connect onto any global GSM network with any 2G SIM Make and receive voice calls using a headset OR an external 8 speaker + electret microphone Send and receive SMS messages, GPRS data (TCP/IP, HTTP, etc.), FM radio broadcasts PWM/Buzzer vibrational motor control