It is a pretty neat watch. 148×168 pixels. 4 buttons. Not touch sensitive. Needs phone to connect to web.
Developement is made very easy by Pebble. Very nice interface and a variety of programming approahes.
C and JS or Pebble.JS Tutorials are very good and a lot source can be found on Git.
Tutorial 1. Get 2 bits of weather info from OpenWeatherMap
I did it using C and JS.
So far so good.