How does Aktiia work and product information

What is Aktiia and how does it work? How is my blood pressure measured? How often does the Aktiia bracelet take a BP reading? Does Aktiia BP Monitor measure my blood pressure when I'm running, walking, exercising? Where do I see all the measurements taken within the two hours range on my Aktiia App? Can multiple people use a single Aktiia bracelet? Understanding Your Aktiia Bracelet’s Water Resistance Can I wear the Aktiia bracelet beside another watch? Who is the product approved for use? Is the Aktiia Bracelet CE marked?