Canon GP-E2 GPS Receiver for Canon EOS 5D Mark III Digital SLR Camera Description
XF205, XF200, XA25, XA20
Records location information (longitude, latitude, elevation, direction, and Universal Coordinated Time (UTC)) as EXIF information to images when shooting.
Can act as a stand-alone GPS logger
On-board electronic compass
Camera time can be synched by the built-in atomic clock;Energy saving design provides hours of continuous use with only one AA size alkaline battery