SUUNTO RACE 2  Great support for training, racing and everyday just like the original Suunto Race, but improvedDesigned for performance  Race 2 is designed to match the style and design construction, introduced in Race S. The case material has been partly changed from metal to plastic in order to make the watch lighter The back plate is completely renewed with new OHR hardware and a new charging interface, making the new cable much more user friendly compared to the old cable.Optical heartrate takes a leap  The whole back cover of the Race 2 has been reinvented. A completely redesigned OHR is introduced, bringing heartrate measurement to a new level of accuracy. The charger interface has been renewed, now snapping to the watch and staying in place incredibly well.Hardware that will keep up with you  Race 2 comes with a completely renewed hardware, a new MCU that makes things happen in double speed and a boatload of more memory to be used for features.