Buy from Amazon.com : http://fave.co/1BeIxE9

Nikon 25396 GP-1 GPS Unit Supplied with GP1-CA10 cable for ten-pin remote terminals GP1-CA90

Product Description :
Geotag image positioning information of pictures such as latitude longitude Geodetic System WGS84 can be added to the image
Correlation between pictures and maps is supported by GPS function in conjunction with ViewNX version 12 software and my Picturetown
Compatible With When using the GP1-CA90 Cable Nikon D5000 Nikon D5100 Nikon D7000 Nikon D90