Power measured directly, at the pedal.
The Vector power meter line brought a new idea to cycling power meters — that your power output should be measured directly, at the pedal.
In the original Vector promotion was intended to introduce the importance of the power meter to the viewer and show that their power, not the bike, was the critical component.
In the second promotion, Vector 2 took the conversation a step further by adding more data analysis than mere power. With Vector 2 you could begin to analyze your specific ride characteristics, learning where and when you are producing power and how that is influenced in various ride conditions.