In the box: Polar WearLink + RCX3Émetteur Polar G5 GPS WINDCapteur PolarGPS data transfer ClipUnité startup Polar DataLinkGuide user RCX3Manuel G5 GPS sensor well no the package contents do not understand the G5 GPS sensor or Polar data transfer unit. impossible to contact the seller for details about this difference in the description and the product received. grrrrr