A new product of crowtail family, it’s a GSM and GPS two-in-one function module which is called Crowtail- SIM808. We add a Crowtail interface to it so that you can use easily. It is very small and based on the latest GSM/GPS module SIM808 from SIMCOM, supports GSM/GPRS Quad-Band network and combines GPS technology for satellite navigation. It has high GPS receive sensitivity with 22 tracking and 66 acquisition receiver channels that will lets you add location-tracking, voice, text, SMS and data to your project in an adorable little package. We can power it with a 3.7V lithium battery, so it can use as a portable module, even you can attach it on your bicycle, it can obtain the speed/location information. In addition, it has a onboard LiPoly battery charging circuitry so that you can take your project on the go. A nice module that can achieve lots of functions. You need it now! Features Quad-band 850/900/1800/1900MHz GPRS mobile station class B Controlled by AT Command (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands) Integrated GPS/CNSS and supports A-GPS Low power consumption, 1mA in sleep mode Supports GPS NMEA protocol Standard Micro SIM Card GPRS multi-slot class12 connectivity: max. 85.6kbps(down-load/up-load) Indicator LEDs for power and network connectivity uFL connection for external passive GPS & external GSM antenna Any standard 2G SIM slides into a secure connector Standard 4-pole TRRS headphone jack. Use any 'Android' or 'iPhone'-compatible headset with mic Package list Crowtail- SIM808 x 1 GSM Antenna x 1 GPS Antenna x 1 Crowtail cables x 1