Huawei Watch D3 - Accurate Blood Pressure? Initial Scientific Review
In a Nutshell
Huawei Watch D3 inflates at the wrist to measure blood pressure but showed mixed accuracy in testing against Omron and Beurer upper-arm devices. Systolic readings were underestimated above 125 mmHg with only 50% within 5 mmHg of references, while diastolic values were consistently overestimated. The device proved unreliable for someone with elevated readings needing to detect hypertension, making upper-arm monitors preferable for precise monitoring.
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Huawei announced the Watch D3, a wrist-based blood pressure monitor that inflates to measure blood pressure rather than estimating from heart rate waveforms. The device performs measurements at the wrist, unlike traditional upper-arm monitors like the Omron and Beurer devices used as references. The testing was conducted over several days with measurements taken following proper protocol: holding the device at heart height, remaining silent during measurements, and taking multiple readings for comparison.
The Huawei Watch D3 allows both daytime prompted measurements requiring manual activation and automatic nighttime measurements during sleep windows. This setup enables 24-hour blood pressure monitoring protocols. For each Huawei Watch measurement, three readings were taken with each reference device (Omron and Beurer), using the median value for comparison. The testing focused on a relatively narrow systolic blood pressure range from approximately 112 to 125 mmHg.
When comparing the two consumer reference devices (Omron and Beurer), a clear correlation was observed between measurements. The Beurer device consistently measured slightly higher blood pressure values than the Omron, particularly for systolic readings. For example, one measurement showed the Beurer reading approximately 123 mmHg while the Omron measured around 117 mmHg, representing a 6-7 mmHg difference. Despite these variations, the two upper-arm devices showed strong agreement overall, with nearly all measurements within 10 mmHg of each other.
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