I ran 10km wearing the Google Fitbit Air and the Apple Watch Ultra 3 - here are all the differences in heart rate, calories & more

A tech reviewer compares the performance of the new screenless Fitbit Air against the Apple Watch Ultra 3 during a 10km run. The piece highlights differences in health metrics and user experience while noting mixed reactions from the existing Fitbit community.
Why it matters
It reflects the ongoing competition in the wearable fitness market and the challenges companies face when introducing radical design changes to established product lines.
I ran 10km wearing the Google Fitbit Air and the Apple Watch Ultra 3 — here are all the differences in heart rate, calories & more | TechRadar
The content is a standard product review and comparison, focusing on technical specifications and user experience.
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