A big step on the way to blood pressure smartwatches

Optical heart rate company Valancell has created a blood pressure monitor that works from the wrist.

The company’s PPG sensors are used in a host of wearables, but now the company says it can use its HR sensors to take blood pressure readings from the wrist or finger.
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https://www.wareable.com/health-and-wellbeing/valencell-says-its-cracked-blood-pressure-from-the-wrist-8265