Chip set：  GSC3F-7879 (internal Flash)

Supply power：  3.3V +- 5%
Channels：   20
sensitivity：  -159 dBm
protocol：  Support NMEA 0183 and SiRF binary protocol
Power consumption：42mA (Continuous mode) ；25mA (Trickle power mode）
Baud rate：  4,800 to 57,600 bps adjustable
antenna：   No Antenna (External Active orPassive antenna) No RF_VCC
Dimension： 27.9mm * 20mm * 2.9mm
Output：  TTL level, 0V ~ 2.85V
PIN：   13 pad
LNA：  Yes
Operating Temp：   -40℃ to +85℃