This smart tracker features all of the technology that the Fenix 2 Special Edition has, with the only difference being display modes. The Fenix 2 displays negative mode black, meaning your data shows up on the display screen with a black backdrop; whereas the Fenix 2 Special Edition has positive mode white which means the display shows up on a white backdrop. Top tip: if you are after your heart rate measurements you can also purchase the HR Monitor, compatible with your watch.