Apple unveils Watch Series 12 and Watch Ultra 4 with an AI upgrade that can recap your day

Apple unveiled the Watch Series 12 ($399) and Watch Ultra 4 ($499), adding “Audio Intelligence” software such as Live Rewind, which shows the previous 15 seconds of a conversation as text, and Siri Recap, which creates titles and key points from ambient-listened talks. New health sensors feature larger ECG electrodes, ring-arranged photodiodes, power-efficient green LEDs, and background heart-rate readings every five seconds, plus readiness scores and a Health Age metric.