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Quad-band 850/900/1800/1900MHz
GPRS multi-slot class 10 standard
GPRS mobile station class B standard
Meet the GSM phase 2/2 + standards 
-Class 4 (2 W @ 850/900 MHz) 
-Class 1 (1 W @ 1800/1900MHz)
AT command control (GSM 07.07, 07.05 and SIMCom enhanced AT command set)
SIM Application Toolkit
Supply voltage range: 
-GPRS: 3.2 ~ 4.8 V 
-GPS: 3.0 ~ 4.5V
Low power consumption
Size: 30 * 30 * 3.2mm
Weight: SIM908: 5.2g 
Working temperature: -40 ° Cto +85 ° C
SMS 
Point MO and MT 
SMS Cell Broadcast 
Text and PDU mode
Voice 
Three kinds of rate 
- Half Rate (HR) 
- Full-rate (FR) 
- Enhanced Full Rate (EFR)
Handsfree function
Support echo suppression algorithm 
GPRS data 
GPRS class 8/10: Maximum 85.6 kbps (downlink rate) 
Support PBCCH 
Coding schemes CS 1, 2, 3, 4 
PPP-stack
CSD data 
CSD up to 14.4 kbps 
USSD 
Nontransparent
Compatibility :AT cellular command interface
GPS 
Receive Type 
- Receive 42 channels 
- GPS L1 C / A code, 
- High-performance STE engine 
Sensitivity 
- Tracking: -160 dBm 
- Cold starts: -143 dBm 
Time-To-First-Fix 
- Cold start: 30s (typ.) 
- Hot start: 1s (typ.)
Accuracy 
- Accurate positioning: <2.5 m CEP
Power consumption (GSM idle mode) 
- Capture 77mA 
- Tracking 76mA

Interface 
SMT Package 80pin 
Support 3V/1.8V SIM card interface 
2-channel analog audio interface 
SPI Interface 
Support RTC 
Charging Interface 
A GSM / GPRS serial port and a debug interface 
A GPS NMEA data output debug port 
Two separate antenna connectors