Apple Watch Ultra 3 owners tend to know the headline features by now: satellite messaging, the brighter always-on display, hypertension alerts.
What most people haven’t noticed is a much quieter feature that only shows up if you also own a pair of the well-received AirPods Pro 3 — the same earbuds you’re probably already using on all those Zoom calls at work every day.
For anyone else trying to squeeze a workout into a packed workday (or if you’re trying to travel light on a business trip), I can tell you it’s become the one I actually rely on most.
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No more packing the chest-strap
AirPods Pro 3 have their own in-ear heart rate sensors, enabled by default, which is easy to miss since Apple doesn’t make a big deal about it.
On their own, they’re a genuinely solid heart rate source, useful for anyone who wants to track a run or a lift without a watch at all. But when you wear both an Apple Watch and AirPods Pro 3 during the same workout, the two devices don’t just duplicate the same job.
They combine into multiple simultaneous streams of heart rate data, and the system automatically leans on whichever source has the highest confidence at any given moment.
That matters more than it sounds like. Wrist-based optical sensors, including the Ultra 3’s, can struggle during movements that shift the watch on your wrist: heavy grip work, rowing, anything involving a lot of wrist flexion.
In-ear sensors don’t have that problem, but they can be thrown off by their fit or by their own motion. Fusing both sources means the watch is quietly falling back on whichever sensor is actually reading you correctly, workout to workout and rep to rep, instead of you having to guess which device to trust.
Honestly, it’s replaced the chest strap by now. I used to strap one on for anything where zone accuracy actually mattered, interval sessions, heavy lifting days, anything where the watch slides around enough on my wrist to throw the optical sensor off.
Is it clinically equivalent to a chest strap? Probably not. But after a few months of comparing the two side by side, it’s close enough that I just don’t bother anymore.
As a professional, that feels like a win to me. It’s one less piece of gear I have to cart around with me on a business trip or to a conference with the rest of my work gear.
Setting it up takes no extra effort. Heart rate monitoring is enabled by default on AirPods Pro 3, so if you already own both devices, this will likely happen in the background the next time you start a workout with both in use.
You can check or turn it off entirely from the Settings app on iPhone, under your AirPods’ name, if you’d rather it not run.
It’s a small thing, and Apple has barely marketed it. But it’s the kind of feature that only reveals itself once you own the specific pair of devices it’s built for.
In my experience, it’s an ideal setup for busy professionals who still want accurate health data without adding extra setups and gear.
If you’ve already got an Ultra 3 and a pair of AirPods Pro 3, there’s nothing to set up and nothing to buy. You’re most likely already using it without realizing it.
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bryan.wolfe@futurenet.com (Bryan M Wolfe)
