Apple introduces new hardware and AI features with Watch Series 12

Apple’s latest smartwatch, the Series 12, retains the familiar case design but incorporates two major hardware upgrades. The new S11 processor includes a secure enclave for on-device microphone data processing and a more powerful CPU, GPU, and Neural Engine. A redesigned health sensor array features larger electrodes for the EKG, reconfigured photodiodes and more efficient optical LEDs, enabling continuous heart-rate measurement every five seconds.

Apple’s testing indicates the continuous heart-rate data stays within five beats per minute of a gold-standard Polar H10 chest strap, with only a slight lag. The upgraded chip also speeds up Siri queries on the wrist. Battery life remains comparable to the previous generation, with fast charging delivering a 44-percentage boost in 20 minutes.

The hardware changes support new software functions, including a readiness score that combines sleep, activity and recovery metrics such as a newly defined recovery HRV. The score, ranging from 0 to 10, is generated after a week of data collection and aims to guide users on workout readiness.

Apple previewed an upcoming suite called Audio Intelligence, which will offer ambient listening features such as Live Rewind, a transcript of recent audio, and Siri Recap, a daily conversation summary. Currently available features include faster Shazam song identification and sound-recognition alerts for specific noises, both opt-in and disabled by default.

The company also announced a redesigned Health app for later this year, promising AI-generated insights, a longevity tab with a Health Age score, VO2-max assessments via the phone’s camera, and the option to order blood panels through a partner lab.

Reviewers note that the Series 12 is a worthwhile upgrade for users of older models, particularly those with chronic health conditions that benefit from continuous monitoring, while newer models may not need to upgrade unless they value the forthcoming AI features.