Steve has been a great friend, a tremendous colleague over the past four years, working on a whole range of energy issues, but also designing a cap to plug a hole in the middle of the Gulf of Mexico when nobody else could figure it out.

WHITEHOUSE: The White House

For comparison's sake, the Jawbone up is rated for up to 10 days but then again, you have to plug it in every time you want to sync, and the cap covering the charging piece is easy to lose.

ENGADGET: Fitbit announces the Flex wristband, a $100 fitness tracker to take on the Jawbone Up