Apple Watch is about to track your heart around the clock — and no, that's not a typo. The Series 12 and Ultra 4 land September 9 with faster chips, a new Fitness app, and always-on heart-rate tracking: the kind that catches rhythm stuff your current watch only checks when you ask it to.
The Ultra's depth face is a flex, but the real story is what's happening inside your wrist.
Series 12, Ultra 4, take your pick. Both get the always-on heart sensor.
Apple's even testing an Oura-style readiness feature — the one the ring crowd swears by. Your wrist is basically becoming a medical device, which is cool until it starts judging your sleep.
Always-on heart rate means it's watching even when you're not looking.
A sensor that never sleeps — catching heart rhythm stuff you'd never notice.
Apple will call it a breakthrough. Your watch is about to know more about you than your doctor.
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Source: MacRumors{:target="_blank" rel="noopener"}
