The Apple Watch Series 12 introduces significant internal changes focused on health tracking and artificial intelligence, despite maintaining the same external design as previous models. The new watch builds on existing features with a redesigned sensor array and a new S11 chip.
The Series 12, along with the Ultra 4, features a new S11 chip with a secure enclave for processing microphone data, alongside a faster CPU, GPU, and Neural Engine. A redesigned health sensor array aims to improve the frequency, accuracy, and power efficiency of health metric measurements. Larger electrodes for the EKG feature, reconfigured photodiodes, and new optical LEDs contribute to these improvements.
These hardware upgrades enable features like more frequent heart rate sampling and a new readiness score. Apple is also introducing “Audio Intelligence,” an AI-powered suite of ambient listening features. While many of these new features won’t be available until later this year, the revamped internals provide meaningful upgrades. The company is aiming to both catch up to the broader wearable space’s adoption of AI for health data analysis and lead the way in AI-powered wearables that offer proactive, personalized information throughout the day. Apple’s approach includes a thoughtful privacy structure for Audio Intelligence and improved Siri functionality on the wrist.
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