The SIM808 GPRS/GSM+GPSShield is a GSM and GPS two-in-one function module. It is based on the latest GSM/GPS module, SIM808, from SIMCOM, supports the 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. It has a standard 4-pole TRRS headphone jack so that you can use any 'Android' or "iPhone"-compatible headset with a microphone. Also breakouts for external 32Ω speaker and electret mic if you don't want to use a headphone

This module can do just about everything, like make and receive voice calls using a headset or an external 32 speaker and electret microphone, send and receive SMS messages, or send and receive GPRS data (TCP/IP, HTTP, etc.).

Features:

• Controlled by AT Command (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands)
• Integrated GPS/CNSS
• Supports 3.0V to 5.0V logic level
• Low power consumption, 1mA in sleep mode
• Supports GPS NMEA protocol
• Standard Micro SIM Card
• Compatible with Arduino Uno, Arduino Leonardo, Arduino Mega
• Powered via Arduino USB connection or Arduino external power supply.
• Communicates with Arduino via UART-TTL and digital input/output.
• Supports Real Time Clock
• Supports for Bluetooth 3.0+EDR

Specification:

• GPRS multi-slot class12 connectivity: max. 85.6kbps(downloads/uploads)
• Supply voltage range: 5V-12V
• Quad-band 850/900/1800/1900MHz – 2G GSM network
• GPRS multi-slot class12 connectivity: max. 85.6kbps(down-load/up-load)
• GPRS mobile station class B
• GPS Receiver channels: 22 tracking / 66 acquisition
• Coarse/Acquisition code: GPS L1
• Tracking sensitivity: -165dBm
• Time-To-First-Fix: Cold starts: 30s (typ.), Hot starts: 1s (typ.), Warm starts: 28s (typ.)
• Horizontal position accuracy: < 2>
• Update rate: 5Hz