Huawei Watch D3 vs D2: Is the Newer Model Worth £50 More?

Huawei’s Watch D2 is still on sale at a discount until stock runs out. The D3 costs £399.99 compared with the D2’s current £350, and both share the same core mechanism: a genuine inflatable cuff built into the strap that measures blood pressure by compressing the wrist artery rather than estimating it from a pulse waveform. Huawei hasn’t claimed any accuracy improvement between the two. The real question is whether the D3’s software additions and slimmer build are worth £50 over a discounted D2, or whether the D2 does the one job that matters just as well for less.

The core measurement hasn’t changed

Both watches use the same oscillometric principle, the same clinical-style cuff compression, and the same sensor category: differential pressure sensor paired with optical heart rate. If cuff-based accuracy is the entire reason you’re buying either watch, that reason applies equally to both. The D3 isn’t a more accurate blood pressure monitor than the D2. It’s a more comfortable and more feature-rich way of doing the same measurement.

Where the D3 genuinely adds capability

Three things are new on the D3 that the D2’s specification page doesn’t offer at all, not refinements of existing features but capabilities that don’t exist on the D2. A dedicated pre- and post-exercise blood pressure mode checks your BP before a workout and again within two minutes after, something the D2 has no equivalent for. Pulse Wave Arrhythmia Analysis gives A-fib alerts via the PPG sensor, working alongside a separate Beat-by-Beat ECG app you activate by holding the side electrode for 30 seconds, a more deliberate heart-rhythm feature set than the D2’s single ECG sensor offers. And a Health Community feature shares real-time blood pressure, heart rate, step count and sleep alerts with family members, useful if you’re monitoring an older relative’s readings remotely rather than just your own.

The D3’s 24-hour ambulatory monitoring also follows European Society of Hypertension interval guidelines directly, targeting at least 70 percent successful readings across 20 daytime and 7 night-time measurements, with user-adjustable intervals and quieter night inflation. The D2 runs ABPM too, but without that stated guideline compliance or the adjustable, quieter implementation.

Where it’s genuinely just comfort, not capability

The case drops to 11.3mm from the D2’s 13.3mm, with the strap narrowing to 25.5mm from 26.5mm. Bluetooth moves to 6.0 from 5.2. None of this changes what the watch measures or how well it measures it; it changes how it feels to wear one for 24-hour monitoring, and whether the phone connection is more modern. If comfort during extended wear matters to you, particularly overnight ABPM sessions, this is a real reason to prefer the D3. If it doesn’t, it’s not.

Battery life is identical

Both watches quote up to 6 days of typical-use battery life, falling to 1 day with 24-hour ABPM enabled. The D3’s case is thinner, and Huawei states a 75-minute full charge time for it, a figure not given for the D2, but the underlying battery performance hasn’t moved despite the size change.

The decision, plainly

Buy the discounted D2 if you want cuff-based blood pressure monitoring and nothing else matters: the accuracy is the same, and you keep £50. Buy the D3 if the pre- and post-exercise mode, the arrhythmia analysis tools, or the Health Community family sharing feature would actually get used, since none of those exists on the D2 at any price. The slimmer case and updated Bluetooth are real but secondary; they’re worth having, not worth paying for on their own.

Full specifications for both models: Watch D3 and Watch D2. For the D3’s full launch details and UK pricing: Huawei Watch D3 Launches: Slimmer Design, UK Pricing Confirmed.

Huawei Watch D3

Micro-pump inflatable cuff, 24-hour ambulatory blood pressure monitoring. Measures pressure directly, no optical calibration required.

£399.99

Huawei Watch D2

Micro-pump inflatable cuff, 24-hour ambulatory blood pressure monitoring. Measures pressure directly, no optical calibration required.

£350

Quick answers

Is the Huawei Watch D3 more accurate than the D2 for blood pressure?
No. Both use the same cuff-based oscillometric mechanism and the same differential pressure sensor. Huawei has not claimed any accuracy improvement; the D3’s changes are in software features and case comfort, not measurement accuracy.

Is the Huawei Watch D2 still worth buying at a discount?
Yes, if cuff-based blood pressure monitoring is the only feature you need. The core measurement is identical to the D3. You lose the pre/post-exercise mode, Pulse Wave Arrhythmia Analysis, and Health Community sharing, none of which exist on the D2 at any price.

What does the Huawei Watch D3 add that the D2 doesn't have at all?
A dedicated pre- and post-exercise blood pressure mode, Pulse Wave Arrhythmia Analysis for A-fib alerts, a separate Beat-by-Beat ECG app, and a Health Community feature for sharing health alerts with family members.

Is battery life better on the Huawei Watch D3?
No. Both watches quote up to 6 days of typical use, falling to 1 day with 24-hour ABPM enabled. The figures are identical despite the D3’s thinner case.

Last Updated on 2 September 2026 by the5krunner

the5krunner

tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID