ITEM DESCRIPTION- This products import direct China via Ali express.The SIM900a GSM/GPRS module is a miniature GSM modem that can be used in a variety of IoT projects. You can use this module to do almost anything a normal cell phone can do, such as sending SMS messages, making phone calls, connecting to the Internet via GPRS, and much more.To top it all off, the module supports quad-band GSM/GPRS networks, which means it will work almost anywhere in the world.