Apple Watch Series 12 features upgraded health sensors and S11 chip performance

The Apple Watch Series 12 introduces a redesigned health sensing system and the S11 chip, which is based on current iPhone processor architecture. The new health sensor array features larger electrodes for improved skin contact during ECG readings, a ring of photodiodes for more efficient light capture, and more powerful green LEDs for heart rate tracking. These hardware improvements enable heart rate readings every five seconds, a 60-fold increase in frequency compared to the Series 11. The device also includes 4GB of RAM, doubling the capacity of its predecessor. The Series 12 features a 1mm wider casing and thicker bezels, with aluminum models now incorporating Ceramic Shield for increased screen durability. Battery life remains consistent with previous models, though charging is faster, providing 12 hours of normal use from a 15-minute charge. New software features include the Readiness app, which provides a daily score based on activity, vitals, and sleep, and upcoming audio intelligence features like Live Rewind and automatic Shazam music recognition.

Tech4K StaffVideo report

The Apple Watch Series 12 introduces a redesigned health sensing system and the S11 chip, which is based on current iPhone processor architecture. The new health sensor array features larger electrodes for improved skin contact during ECG readings, a ring of photodiodes for more efficient light capture, and more powerful green LEDs for heart rate tracking. These hardware improvements enable heart rate readings every five seconds, a 60-fold increase in frequency compared to the Series 11. The device also includes 4GB of RAM, doubling the capacity of its predecessor. The Series 12 features a 1mm wider casing and thicker bezels, with aluminum models now incorporating Ceramic Shield for increased screen durability. Battery life remains consistent with previous models, though charging is faster, providing 12 hours of normal use from a 15-minute charge. New software features include the Readiness app, which provides a daily score based on activity, vitals, and sleep, and upcoming audio intelligence features like Live Rewind and automatic Shazam music recognition.

The Apple Watch Series 12 features a redesigned health sensor system with larger electrodes and more efficient photodiodes. Heart rate tracking is significantly more frequent, with the device taking readings every five seconds.

The S11 chip provides double the RAM of the previous S10 chip, with 4GB of memory. Aluminum models now feature Ceramic Shield, which is 60% tougher than previous screen materials.

A 15-minute charge now provides up to 12 hours of normal use, an improvement over the Series 11. The device includes new software features like the Readiness app and upcoming audio intelligence capabilities.

Chapter guide

Unboxing and initial impressionsThe video introduces the Apple Watch Series 12 in 42mm and 46mm sizes with aluminum and ceramic finishes.Health sensor redesignA detailed look at the new health sensor system, including electrodes, photodiodes, and LEDs.S11 chip and performanceAn overview of the S11 chip architecture and its performance improvements.Durability and design changesDiscussion of the new Ceramic Shield display and minor design adjustments to the casing and buttons.Battery and chargingComparison of battery life and charging speeds between the Series 11 and Series 12.Setup and software featuresA walkthrough of the setup process and an introduction to new features like Readiness and audio intelligence.Health app and longevityAn exploration of the redesigned Health app and the new longevity tracking features.

Worth noting

  • The video mentions that some audio intelligence features, such as Live Rewind, are not yet available and are expected later in the year.
  • The Readiness app requires several nights of sleep data to begin providing accurate scores.

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