Based on recent rumours, Huawei is expected to reveal its first smartwatch with blood pressure monitoring capabilities this year, possibly even this month. The device is not thought to be the Watch GT Runner though, with leakers tentatively referring to it as the Watch D, instead.
Now, ITHome has discovered a patent Huawei submitted that might describe how this blood pressure functionality works. Apparently, the smartwatch calculates your wrist circumference and your fat levels using two sensors. A third sensor monitors your blood pressure, while the smartwatch's SoC corrects your blood pressure data based on that which it receives about your wrist circumference and fat levels.
All this is done non-invasively and does not require a blood pressure cuff for calibration. Theoretically, Huawei's approach could be more accurate than those taken by Apple and Samsung, but we would recommend reserving judgement until Huawei actually brings the Watch D to market.
It is worth noting that Huawei has already received approval for this sensor in China, where the company is believed to be launching the Watch D first. Apparently, Huawei will unveil the Watch D globally too, although it is unclear when.
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