Blood pressure watches anyone?
Caltech Team Develops First Noninvasive Method to Continually Measure True Blood Pressure
https://www.caltech.edu/about/news/caltech-team-develops-first-noninvasive-method-to-continually-measure-true-blood-pressure
Device uses sound waves to gather blood pressure data from blood vessels, monitoring the response with ultrasound.
Seems very interesting, pr burble aside. Wonder how close this is to a micro-sonogram if generalised ? Star Trek medical tricorder component material by my reckoning.