Sirf III chipset GPS module with 6 pin cable. Includes power/lock indicator LED and backup supercap. One of the nicest GPS modules I've come across

• 5V power, ~40mA current draw
• 45s cold start, 38s warm start, 8s hot start
• -159dB sensitivity (I tested this a lot in the canyons of downtown New York)
• 1.2" x 1.2" x 0.4"
  

Lots more info including datasheets, software, etc. available here