The EM-406A GPS module from USGlobalSat based on the spectacular SiRF StarIII chipset. This complete module is built upon the same technology as the ET-301, but includes on-board voltage regulation, LED status indicator, battery backed RAM, and a built-in patch antenna! 6-pin interface cable included.
Features:

• Weight: 16g including cable
• 20-Channel Receiver
• Extremely high sensitivity : -159dBm
• 10m Positional Accuracy / 5m with WAAS
• Hot Start : 1s
• Warm Start : 38s
• Cold Start : 42s
• 70mA at 4.5-6.5V
• Outputs NMEA 0183 and SiRF binary protocol
• Smallest complete module available: 30mm x 30mm x 10.5mm

Documents:

• EM-406A Datasheet
• NMEA Reference Manual
• SparkFun GPS Tutorial
• GPS Tutorial by Michael Simpson
  

Please note that the grey wire on the communication cable is not pin 1!