The brand new g3 ultra lightweight and the worlds most accurate power meter pro level power management taken to a new level since our introduction of the worlds first ever wireless power meter in 2006 weve been continually striving to improve it the powertap g3c and g3 hubs raise the bar to another level altogether lighter stiffer ant compatible and better than ever at powertap we realize that data can be the difference between first and second and powertap is the precise instrum