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September 9, 2026

Apple Watch Series 12 and Ultra 4 Offer These Eight New Health and Fitness Features Hartley Charlton | usagoldmines.com

The Apple Watch Series 12 and Ultra 4 offer a range of new health and fitness features. Here’s everything that’s new.



Apple today revealed the following features for the two new devices:

  • New “Health Sensing System”: A redesigned sensor architecture with three main improvements, including increased electrode surface area for better ECG skin contact, photodiodes arranged in a ring for more efficient light capture, and larger, more power-efficient green LEDs for accurate heart rate readings during motion.
  • Continuous heart rate sensing: Heart rate is now measured every five seconds throughout the day, 60 times more frequently than before, viewable via a new watch face complication.
  • Higher-frequency HRV: Heart rate variability is sampled up to 24 times more often, with separate recovery and overall HRV values shown in a new section of the Heart Rate app.
  • Daytime vitals view: A new toggle lets users switch between overnight and daytime vitals, potentially catching shifts in metrics before they show up in overnight readings.
  • VO2 Max test: A new test has users set up their iPhone to watch them perform a series of exercises, delivering results immediately alongside data from their Apple Watch.
  • Most accurate step tracking: A redesigned pedometer model with new machine learning algorithms improves distance accuracy for indoor workouts and all-day step counts.
  • Steps complication: A brand-new watch face complication, enabled by the S11 chip, lets users track their step count in real time.
  • Longer workout battery life: Up to 10 hours during an outdoor workout, 25% more than the previous model, with 15 minutes of charging now delivering up to 12 hours of extra battery. The Apple Watch Ultra 4 goes further, with up to 50 hours of everyday battery life, 84 hours in Low Power Mode, and a new Max Extended Workout mode rated for up to 45 hours of outdoor tracking; 15 minutes of charging adds up to 18 hours of battery.

The Apple Watch Series 12 starts at $399 and the Apple Watch Ultra 4 starts at $799, with pre-orders for both open today and availability beginning Friday, September 18.

Related Forum: Apple Watch

This article, “Apple Watch Series 12 and Ultra 4 Offer These Eight New Health and Fitness Features” first appeared on MacRumors.com

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This articles is written by : Nermeen Nabil Khear Abdelmalak

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