Apple Watch Series 11
Apple today introduced Apple Watch Series 11, offering the most comprehensive set of health features yet, longer battery life, an even more durable cover glass, and 5G cellular capabilities, all in its thinnest and most comfortable design. Apple Watch Series 11 is the ultimate health and fitness companion, empowering users with notifications for signs of chronic high blood pressure — also known as hypertension — plus new insights into sleep quality with sleep score, adding to the robust suite of health features included in the device. Featuring up to 24 hours of battery life and Ion-X glass that’s 2x more scratch-resistant, Apple Watch is more convenient than ever to wear throughout the day and night.
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If users receive a hypertension notification, it is recommended that they log their blood pressure for seven days using a third-party blood pressure cuff and share the results with their provider at their next visit, which is consistent with the latest American Heart Association guidelines for the diagnosis and management of hypertension.
Previously:
Update (2025-09-10): Tim Hardwick:
Apple has announced that its new hypertension detection feature, initially exclusive to the Apple Watch Ultra 3 and Apple Watch Series 11, will be expanded to include earlier Apple Watch models.
Update (2025-09-11): matejamm1 (via Meek Geek):
So Apple is hyping the Watch Series 11 as having 24 hours of battery life compared to 18 hours on the Series 10. That looks like a huge 33% improvement, moving away from their 18h goalpost for the first time ever since the very first Watch. But if you read their testing methodology in the footnotes it’s not really what it seems.
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The “extra 6 hours” is just Apple finally including sleep tracking in the test. But sleep tracking barely sips power, and previous Apple Watches have already been able to easily surpass their 18 hour claims and go through a night of sleep tracking on top.
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So here, not only is the difference just 2 hours (38 vs 36), a measly 5% increase, but even then Apple also quietly lowered the “active usage” assumptions for the new model. Fewer checks, fewer notifications, less app time. Again, not really an upgrade, just a shift in methodology.
They also (long ago) changed their methodology for measuring phone thickness.
