Recently upgrade to the Giant Propel Pro 1 which comes with the Power Halo. Couldn’t find any posts regarding this powermeter and so far have been less then impressed when comparing against Assioma pedals.
Preformed a static weight test on the pedals prior to the below. and calibrated both before each ride
Intervals around a velodrome
Outdoor ride - Initially the Halo reads high however it then starts drifting down. By the end it was reading significantly lower
Outdoor ride along bike path - Again can see it drifting downwards compared to the pedals