The device measures blood pressure through several sensors which simultaneously measure the contact pressure, pulse and blood flow on the surface of the skin in the vicinity of the wrist.
Yes, Sir Isaac Newton is best known for his work on gravity. He also worked on and discovered many other scientific wonders during his lifetime (1642-1727).
Wikipedia comments that, ' Sir Isaac Newton, FRS (4 January 1643 â 31 March 1727 [OS: 25 December 1642 â 20 March 1726]) was an English physicist, mathematician, astronomer, natural philosopher, alchemist and theologian.