Suster keeps talking about it being safe because they put sound-waves into pregnant women's bellies ... the FDA actually regulates how much power can be sent, and those probes require direct (usually gel coupled) contact with the target.
Sound waves can definitely damage flesh.
But then Mark Suster said "hey, our engineers said it's legit, quit your whining!"
https://bothsidesofthetable.com/the-audacious-plan-to-make-e...