Adafruit FONA 808 Shield - Mini Cellular GSM + GPS for Arduino

OverviewCellular + GPS tracking, all in one, for your Arduino? Oh yes! Introducing Adafruit FONA 808 GSM + GPS Shield, an all-in-one cellular phone module with that lets you add location-tracking, voice, text, SMS and data to your project, in Arduino shield format for easy use. This shield fits right over your Arduino or compatible. At the heart is a powerful GSM cellular module (we use the latest SIM808) with integrated GPS. This module can do just about everything Quad-band 850/900/1800/1900MHz - connect onto any global GSM network with any 2G SIM Fully-integrated GPS (MT3337 chipset with -165 dBm tracking sensitivity) that can be controlled and query over the same serial port Make and receive voice calls using a headset or an external 32Ω speaker + electret microphone Send and receive SMS messages Send and receive GPRS data PWM/Buzzer vibrational motor control AT command interface with "auto baud" detection Here's the GPS specifications: 22 tracking /66 acquisition channels GPS L1 C/A code Sensitivity Tracking: -165 dBm Cold starts : -148 dBm Time-To-First-Fix Cold starts: 32s (typ.) Hot starts: 1s (typ.) Warm starts: 5s (typ.) Accuracy: approx 2.5 meters