Technology · 10 September 2026

Apple launches Watch Series 12 and Ultra 4 with new health features

Apple has revealed its new Watch Series 12 and Watch Ultra 4, with both getting an upgraded health sensing system. The Series 12 measures heart rate every five seconds, up to 24 times more often for HRV, and has a new daily "Readiness" score. The Ultra 4 boasts an extended 50-hour battery life for everyday use and also new ceramic case colours.

By BriefTea Editorial · 10 September 2026 at 7:15

Reported by Hodinkee · How we write briefs

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What is HRV? How often are new watches released? What is a 'Readiness' score?

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