Check out this cool concept watch from Balykin Design, the Sand and Time Watch.

It works like a standard watch and tells the time in the hour glass shaped segments, then when it goes into screen saver mode, the digital sand drops from the top chamber to the bottom, just like an egg timer.

I have no idea if this concept will ever be built, but if you cant wait till one comes out you could just strap an egg timer to your wrist.

via Yanko Design