Your watch requires a few seconds to calculate a value for highly variable data types such as speed or pace.
The accuracy of the data is linked to the quality of your GPS signal : You may experience some temporary shift in speed or pace linked to the signal quality, based on your location.
The evaluation of running pace requires a minimum of 8min/km to deliver stable data.
On very bumpy terrain the elevation gain/loss may miss accuracy.
The values presented by ActiveLook eyewear are indicative. Stay tuned - we are continuously working on improving the ActiveLook experience.