The ability to measure pulse rate or steps in a given day. Christina and her mother experimenting with the watch for cnbc. Im not sure i understand how to use it very well. What time is it . How many steps did i walk today . This is always curious. Heart rate. Are you stressed right now . The watch is stressing me out. The latest technology is for the unhealthy. They have announced the very first cleared fda medical accessory. It allows the heart watch to perform regular ekgs on the wearer. I want to get one thing out of the way. Wikipedia says youre the man widely believed to be the man behind google plus. Are you the man behind google plus . I was. Okay. If youre editing wikipedia you can take that off. Thank you for having me on the program. I wanted to do something that was very meaningful. I had spent 24 years at microsoft and google. I had the unique opportunity to retire. I retired for about a year and realized i had to do something. What better way to spend your time than work