Only a handful of smartwatches carry FDA clearance for blood pressure, and even those features don’t replace a cuff reading.
A blood pressure number on your wrist feels official until you set it beside an upper-arm cuff reading. The line that matters is regulatory rather than technological: a feature was either cleared by the FDA or it was never evaluated as a medical device, and that split decides how much smart watch blood pressure accuracy you’re actually getting. The FDA’s safety communication tells consumers not to use unauthorized wearables, including smartwatches and smart rings, that claim to measure blood pressure.
Here’s what separates the two groups, what Apple’s own validation data found, and how to check a watch before you trust a single number from it.
Which Blood Pressure Smartwatches Are FDA Cleared?
Three devices have FDA clearance or authorization tied to blood pressure, and each one does a different job. The Omron HeartGuide inflates a cuff built into its wristband to take a real oscillometric measurement. The Biobeat smartwatch-based monitor is cleared for patient monitoring. The Apple Watch feature cleared in September 2025 doesn’t measure blood pressure at all — it looks for signs of hypertension and notifies you.
Reuters reported that Apple’s clearance covers Apple Watch Series 9, Series 10, Series 11, Ultra 2, and Ultra 3, with rollout planned in 150 countries and regions, including the U.S. and the European Union. Read the category labels closely, because a hypertension notification is not a blood pressure reading.
Worth knowing what clearance actually means: the FDA’s 510(k) path shows a device is substantially equivalent to something already on the market. It is not the same as FDA approval, and it is not a promise of perfect readings.
Samsung’s Galaxy Watch blood pressure feature sits in a third category. It runs on Galaxy Watch 4 and later when paired with a Samsung Galaxy phone on Android 12 or higher, and it requires calibration against a traditional upper-arm cuff. Samsung has said the feature is built for wellness rather than medical use and is not subject to FDA clearance.
The table below sorts the options by what they actually do.
| Device Or Feature | FDA Status | What It Actually Does |
|---|---|---|
| Omron HeartGuide | Cleared | Inflates a cuff inside the wristband and measures blood pressure directly. |
| Biobeat smartwatch monitor | Cleared | Tracks blood pressure without a cuff for patient monitoring. |
| Apple Watch hypertension notification | Cleared September 2025 | Flags possible hypertension; it does not report blood pressure numbers. |
| Samsung Galaxy Watch blood pressure | Wellness feature, not FDA cleared | Shows trends after calibration with an upper-arm cuff. |
| Unreviewed smartwatch BP modes | Not authorized | Estimates the FDA says should not be used for blood pressure. |
| Smart rings claiming BP measurement | Not authorized | Named directly in the FDA warning against unauthorized wearables. |
| Home upper-arm cuff | Authorized, product code DXN | The measurement clinicians use to confirm what a watch suggests. |
How Accurate Are Unverified Smartwatch Readings?
The American Heart Association describes cuffless wearable technology as promising but not yet proven for diagnosis or treatment decisions, and it notes that FDA clearance does not guarantee measurement accuracy either.
Apple’s own validation study shows how wide that gap runs. Apple states that the feature is not a diagnostic tool.
The FDA takes a harder line than most shoppers expect. Its safety communication on unauthorized blood pressure devices says not to use wearables that claim to measure blood pressure without authorization, because an unreviewed feature can raise false alarms and miss real ones.
Accuracy varies by person, too. Research suggests wearables can perform worse for people with obesity or darker skin tones, which is one more reason a missing alert proves nothing about your health.
Checking A Device Before You Trust It
Look the device up in the FDA’s 510(k) database before you spend money, and confirm any alert with an upper-arm cuff instead of treating the watch as the verdict. Authorized blood pressure devices generally carry product code DXN, which makes them simple to spot in that database.
An alert is a prompt to get checked and nothing more. A cuff measurement or a clinician visit is what determines whether your blood pressure is actually high, and skipping that step is where wrist numbers cause real trouble. No alert does not rule out hypertension, either.
If you’re comparing models, our tested blood pressure smart watch picks lay out which ones measure, which ones only notify, and what each one requires.
Three habits keep a smartwatch reading in its proper place:
- Verify the exact model and feature in the FDA 510(k) database before buying.
- Follow any alert, and any single reading, with an upper-arm cuff measurement.
- Never start, stop, or change blood pressure medication based on a watch.
Common Questions
Can A Wellness Smartwatch Diagnose High Blood Pressure?
No. A feature that was never reviewed by the FDA cannot diagnose anything, and the agency says unauthorized wearables claiming to measure blood pressure should not be used. These modes estimate trends at best. Only a validated upper-arm cuff, used correctly, produces a number a clinician can act on.
Does FDA Clearance Mean The Reading Is Accurate?
Clearance and proven accuracy are separate things. The American Heart Association makes that point directly, and Clearance mainly confirms a device was reviewed and authorized.
What Should I Do If My Watch Sends A High Blood Pressure Alert?
Treat the alert as a prompt, not a diagnosis. Take a reading with a validated upper-arm cuff, ideally more than once, and bring the numbers to a clinician. The alert tells you your watch noticed something worth checking, nothing more, so do not adjust medication based on it.
Sources
- U.S. Food and Drug Administration. “Do Not Use Unauthorized Devices for Measuring Blood Pressure — FDA Safety Communication” Supports the warning against unauthorized wearable blood pressure features and the 510(k) verification step.
- American Heart Association. “Cuffless Blood Pressure Technologies in Wearable Devices Show Promise to Transform Care” Source for the accuracy limits of cuffless readings and the note that FDA clearance does not guarantee accuracy.
- Reuters. “US FDA clears Apple Watch hypertension feature” Supports the September 2025 clearance date, the covered Apple Watch models, and the 150-country rollout.