Facebook Design Resources now have Watches as well :)
https://facebook.github.io/design/devices.html (props to Harry Copeman, Riccardo Carlet and Jeff Smith)
I also wanted make this devices available to Framer immediately, including a simple prototype example and Sketch source file :) Please enjoy.
Example Prototype: http://beta.rss-ems.com/Moto360/prototypeBoilerplate Prototype with Moto 360: http://beta.rss-ems.com/Moto360/boilerplatePrototypeSketch File: http://beta.rss-ems.com/Moto360/sketch
Very nice Sancho :)