Introduction and designIf Apple is building an iWatch, it's probably keeping a close eye on Nike's FuelBand right now.With the first FuelBand, Nike successfully built a life gamifier. It was a piece of fitness tech that you'd wear like any other watch or wristband, not just something to put on for a jog like you would the TomTom Runner. In other words, it nailed wearable tech.The Nike FuelBand SE is the second iteration of the FuelBand, but while the Fitbit Force and others are edging into smartwatch territory, Nike has instead decided to keep its focus on fitness and plugging the gaps found in the original.