Huawei just gave us the first real look at the Watch D3, and the tagline says everything: "Blood Pressure Management, Made Slimmer." The watch launches September 2, one week before Apple's fall event, and it's aiming at the one health metric almost nobody else on a watch does properly.
What the teaser actually shows
Huawei's teaser clip and images confirm the formula hasn't changed. The Watch D3 is still a rectangular smartwatch with a digital crown and a button below it, built around blood pressure monitoring. What changed is the bulk.
The D2 measured 13.3mm thick, which is genuinely chunky for a wrist, and Huawei's teaser leans hard on a side-on comparison to show how much thinner the D3 case is. The edges are more rounded, the section housing the blood pressure hardware is visibly slimmer, and the whole thing reads less like a medical device strapped to your arm.
Huawei also promises a larger screen, though it doesn't say larger than what. The D2 already had a fairly big 1.82-inch display, so the gain likely comes from thinner bezels. Add the soft straps and new color options mentioned in the launch material, and the pitch is clear: a blood pressure watch you'd actually wear every day.
The cuff is still the point
Here's why the Watch D line matters at all. Most smartwatches that claim blood pressure tracking use optical estimation, which means the watch guesses your pressure from pulse wave analysis. It's convenient and usually vague, and in most markets it isn't cleared as a medical measurement.
The Watch D watches work like an actual blood pressure monitor. The band contains a micro-pump and inflatable airbag that physically compresses your wrist, the same principle as the cuff your doctor uses. Slower, more mechanical, and far more credible.
One of the teaser watch faces drives the point home: systolic and diastolic readings, a blood pressure trend graph, and heart rate front and center. Huawei's own launch material calls the D3 its "next-generation blood pressure monitoring watch," and notably, the company says it has already secured CE-MDR certification in Europe. That's the EU medical device regulation, which means Huawei is continuing to treat the D series as a regulated medical product rather than bolting another estimated metric onto a normal smartwatch.
That certification is the real headline for European buyers. Medical-device status is what separates "this watch measures blood pressure" from "this watch makes an educated guess," and it's a regulatory wall Samsung and Apple haven't climbed with a cuff-based approach.
From model numbers to a product
The D3 isn't exactly a surprise. About a week before the teaser, the watch showed up in certification records under two model numbers, RIV-B10 and RIV-B11. At that point we knew Huawei was building a successor but had no idea what it would look like. The teaser fills that gap.
What we still don't know:
- Pricing. The D2 launched at a premium, and the slimming act plus the CE-MDR route suggest the D3 won't undercut it.
- Where it will sell. Huawei's D-series availability has been patchy by region, and the teaser doesn't settle which markets get it first.
- How much thinner. The teaser shows a visible reduction but no millimeter figure. The D2's 13.3mm is the number to beat.
- Battery life. Pumping a cuff takes energy, and slimmer cases mean smaller batteries. Interesting tension to watch in the spec sheet.
The timing is not an accident
September 2 puts the Watch D3 exactly one week ahead of Apple's September 9 event, where we're expecting the Apple Watch Series 12 and Ultra 4. Apple is widely rumored to keep pushing health sensing, and Samsung already has optical blood pressure on the Galaxy Watch line. Huawei can't out-market either company, but it can own the cuff-based lane nobody else is in.
It's also the third generation of a line Huawei keeps investing in: the original Watch D in 2022, the D2 in 2024, and now the D3. Companies don't iterate on a niche three times unless the niche is working.
Huawei's had a strong year in our coverage too, with the Watch GT Runner 2 proving the company can still ship a proper running watch. The D series is the other half of that identity: health hardware first, smartwatch second.
Bottom Line
The Watch D3 looks like exactly what the D2 should have been at launch: same cuff-based blood pressure credibility, minus the medical-device bulk. CE-MDR certification is already secured, the design looks meaningfully thinner, and Huawei picked a launch date that lets it steal a week of health-watch headlines before Apple takes the stage.
September 2 will answer the price and availability questions. If the D3 lands near D2 pricing with a genuinely slimmer case, it becomes the only serious option for anyone who wants actual blood pressure numbers from their wrist.