For heart rate testing, Horst used a Polar H10 chest strap as the benchmark. The Apple Watch Ultra 2, running watchOS 26 beta, delivered results that were nearly identical to the strap during indoor ...
A new comparison of smartwatch health sensors has given the Apple Watch Ultra 2 the edge over some of its biggest rivals. The study by bioinformatics scientist Rob ter Horst (The Quantified Scientist ...
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