I saw a bit about this awhile ago. It looks like it will actually be on sale soon.
http://www.engadget.com/2010/09/08/s...-by-end-of-20/
The main reason Im posting it is that this is not a segmented display like was used in previous eink watches. This is an actual 2"(ish) active matrix display capable of displaying anything that a larger 5"/6"/9.7" eink based ebook reader.
First time I have seen the smallest size used in an actual product. It would be interesting to try to read a book on it
they used to have the specs for this size on the products page at the Eink site but they havent since the advent of Vizplex. The article here
http://ablogtoread.com/seiko/seiko-a...back-in-style/ says the display is 300 dpi.