Apple Watch can tell you that the last 30 days of heart data look like hypertension. It will not tell you 128 over 82. The Huawei Watch D3 will tell you a systolic and diastolic number, because the strap is a cuff, and it will not run your iPhone. Choosing between them is mostly a matter of noticing that they do not measure the same thing.
Disclosure: Fitcoin is our product. We are not affiliated with Whoop, Oura, Google, Fitbit, Garmin, Polar, Amazfit, Xiaomi, Samsung, Ultrahuman, RingConn, Hume Health, Bionny, Apple or any other hardware brand named here. We do not sell trackers and we take no affiliate commission. Where Fitcoin appears, it is as the rewards and insights app that reads the data these devices write to Apple Health or Health Connect. Everything below is a wellness estimate for general fitness, not medical advice.
Quick verdict
Buy an Apple Watch if you want a normal smartwatch that can quietly flag a pattern consistent with hypertension, then send you to a real cuff. Buy the Huawei Watch D3 if you already need systolic and diastolic numbers across a day and a night, and you can buy the watch in a country where that measurement is certified. The Apple Watch does not display blood pressure. The D3 does not replace an iPhone.
A notification is not a reading
Apple's hypertension notification, on Apple Watch Series 9 and later and Ultra 2 and later, watches the optical heart sensor for 30 days at a time. If the pattern looks like chronic high blood pressure, you get an alert. You do not get a systolic number, a diastolic number, or a night-time average. Apple's own instructions then tell you to measure with a third-party cuff for seven days and talk to a clinician. The feature is for adults 22 and older who are not pregnant and who have not already been diagnosed with hypertension. It is not on the Apple Watch SE.
The Watch D3 is built for the step Apple outsources. An airbag in the strap inflates, a pressure sensor reads the oscillation, and Huawei Health stores systolic and diastolic values. You can take a seated spot check, run a 24-hour ambulatory plan, and measure before and after a run, walk or ride. In the EU that blood pressure function is CE-MDR certified. Huawei still says you must not diagnose or treat yourself from it.
So the honest comparison is not "which blood pressure watch is better." It is which job you have. Screening people who feel fine is Apple's job. Recording the numbers once you are in the blood pressure conversation is the D3's job, with an upper-arm cuff still in the house as the check. Details on the Huawei side are in the Watch D3 review.
Side by side
| Huawei Watch D3 | Apple Watch (Series 9 or later, not SE) | |
|---|---|---|
| What you see | Systolic and diastolic, plus daytime and night-time averages on an ABPM plan. | A notification if 30 days of optical data look like hypertension. No mmHg. |
| How it measures | Inflatable wrist cuff, oscillometric method. | Optical heart sensor, passive, no cuff and no calibration. |
| Who it is for | Adults who will sit for a cuff reading. Not validated in pregnancy or for newborns. | Adults 22 and older, not pregnant, without a known hypertension diagnosis. |
| Regulatory shape | CE-MDR in the EU for specified BP measurements. No official US launch. | Hypertension notifications cleared as a screening feature, including FDA, not as a blood pressure monitor. |
| If you already have hypertension | Can log repeated readings and a 24-hour report. Still not a reason to change medication alone. | The notification feature is not indicated for people already diagnosed. |
| Price | £399.99 in the UK. No US retail price. | Series 11 launched from $399 in September 2025. You need an iPhone. |
| Battery | Up to 6 days typical. About 1 day with ABPM on. | About a day on Series 11, longer on Ultra. No multi-day ABPM mode. |
| The rest of the watch | Huawei Health, Curve Pay where available, no swim, iOS and Android. | iPhone features, GPS on cellular and standard models, apps, Apple Pay, swimming on current models. |
What the Apple notification can and cannot catch
Apple's pitch is population screening. Hypertension often has no symptoms, a single clinic reading misses it, and a watch that is already on the wrist can look for a pattern without asking you to sit down every morning. That is useful, and it is narrower than the ads feel.
The FDA 510(k) summary figures, discussed in a 2026 paper in the journal Hypertension, put sensitivity at 41 percent and specificity at 92 percent against 15 to 30 days of home blood pressure monitoring. Specificity at that level means a notification is a reasonably strong prompt to go and measure properly. Sensitivity at 41 percent means most people who would have shown hypertension on home monitoring never get the alert. Apple says the absence of a notification does not mean the absence of hypertension. The journal commentary's point is that shoppers will struggle to remember that.
The D3 does not have a published equivalent of that screening study, because it is not trying to be a silent 30-day classifier. It is trying to be a wrist cuff. The early reviewer record is mixed: T3 saw a consistent low offset against a Garmin Index BPM, about 16 mmHg systolic and 5 mmHg diastolic across three sessions, while Stuff's comparison with a home cuff looked tight. Until you have checked your own D3 against an upper-arm monitor, treat the first week as a calibration, not as a diagnosis.
If you already know your blood pressure is a problem
This is where the products diverge completely. Apple's notification is not for people with a diagnosis. If you have one, the watch can still hold a blood pressure log, but you have to type in readings from a separate cuff. The watch will not produce them.
The D3 will produce them, including a night trace, which is the gap home monitors usually leave unless you borrow an ambulatory recorder. Whether your clinician wants that file from a wrist device is a question for them. Wrist and upper-arm values can separate when arteries are stiff, when perfusion is poor, or when the posture is sloppy. Huawei lists arrhythmia, arteriosclerosis, diabetes and kidney disease as reasons to ask a doctor before you rely on the wrist number.
Pregnancy is a no for both, for different reasons. Apple excludes it from the notification. Huawei says the D3 has not been validated in pregnancy, including preeclampsia. Pre-eclampsia decisions belong on clinical equipment, not on either of these watches.
The watch you wear when you are not measuring
An Apple Watch is a wrist computer for an iPhone. Maps, messages, Wallet, workout apps, a fall detection story, and on current models a battery that gets you through a day rather than a week. Series 11 launched from $399 in September 2025 with the hypertension feature that Series 9 and Ultra 2 also gained through software. You cannot use it on Android. If your phone is a Pixel or a Galaxy, this comparison is over before blood pressure starts.
The D3 pairs with both, through Huawei Health, on Android 9 and iOS 13 or later. You get a bright 1.92-inch screen, Bluetooth calls, and Curve Pay rather than Apple Pay. You do not get the App Store. You take the watch off to swim. Six-day battery is the everyday claim, and it collapses to about a day if you run the 15-minute ambulatory plan. For a training week, an Apple Watch or a Whoop is the device you will resent less. For a planned blood pressure day, the D3 is the one that can finish the job Apple starts.
There is a third product people confuse with both. The Hume Band 2.0 shows blood pressure trends from an optical band at $249, with no cuff and no 30-day hypertension classifier. It belongs in the wellness-trend pile with Whoop MG, which we compared with the D3 in Watch D3 versus Whoop MG. It is not an Apple Watch and it is not a monitor.
A setup that actually makes sense
- iPhone owner, no known blood pressure issue: wear the Apple Watch, leave the notification on, and own a validated upper-arm cuff for the week Apple asks for if an alert arrives. Do not buy a D3 "just in case."
- You are already monitoring, or a clinician wants a 24-hour trace: an upper-arm cuff is still the reference. Add a D3 only if a wrist ABPM report is acceptable to the person who will read it, your wrist is 13 to 21 cm, and the watch is sold where you live.
- You want one watch for training, sleep and payments: Apple Watch. The D3's cuff is a specialist tool that happens to tell the time.
- Android, and you want numbers rather than a notification: the D3 is the rare wrist option, with the same cuff caveats. Samsung's own blood pressure feature, where it is enabled, still depends on calibration with a cuff and is a different product from both of these.
- United States: there is no official D3 to buy. Apple's notification is the one that exists in US retail. Importing a Huawei does not turn it into an FDA-cleared monitor.
What not to do with either
- Do not treat a missing Apple notification as a clean bill of health. The published sensitivity says a large share of people with hypertension will not be flagged.
- Do not treat a single D3 reading after coffee, with your arm in your lap, as the number to show a GP. Use the posture card or do not bother.
- Do not change medication from either device. Both companies say this. It is the sentence that matters more than the spec table.
- Do not buy a Huawei Band 10 or Band 11 because the name sounds close. They do not measure blood pressure.
Frequently asked questions
Does the Apple Watch measure blood pressure?
No. Series 9 and later, and Ultra 2 and later, can notify you if 30 days of optical data look like hypertension. They do not show systolic or diastolic numbers. The SE cannot notify you either.
Is the Huawei Watch D3 more accurate than an Apple Watch?
They are not doing the same task, so there is no accuracy contest. The D3 tries to measure pressure with a cuff. The Apple Watch tries to screen for a pattern. Check any D3 against an upper-arm monitor before you rely on the offset.
Can I use the Apple Watch notification if I already have hypertension?
Apple's feature is not indicated for people with a diagnosis, for anyone pregnant, or for anyone under 22. If you already monitor, you need a cuff, not a notification.
Will the Watch D3 work with an iPhone?
The watch pairs through Huawei Health on iOS 13 or later. Cuff readings stay in Huawei Health. They do not become Apple blood pressure log entries on their own.
What if an Apple notification arrives?
Measure with a third-party cuff for seven days, the way Apple instructs, and take those readings to a clinician. The notification is a prompt, not a diagnosis.
Method: Checked September 28, 2026 against manufacturer product pages, published help documentation and independent reviews. Prices are US list at publication unless noted. Fitcoin has no commercial relationship with the hardware brands named here. Wellness estimates only, not medical advice.
Related reading: Huawei Watch D3 review, Watch D3 vs Whoop MG, Whoop vs Apple Watch, Oura vs Apple Watch, Hume Band 2.0 review, What is a good HRV?
About the author: Harris Khan is the co-founder and CTO of Fitcoin, a UK fitness-rewards and health-insights app that reads Apple Health and Health Connect.