Whether it's iOS or Android - I realize it might be a mock-up, but I do like the idea of a smart band as they picture above. I also don't think they need to be a full color display. Make it simple and vivid. Something akin to a kindle paperwhite. I wouldn't want to be charging my watch every day. Also, please make it waterproof and I'm sold.
Samsung will not be far off selling 10 million smart watches in the first year, if you can trust sales numbers shown by Canalsys. This with a completely niche product written off by all tech writers. As a comparison, the first iPhone sold little over 6 millions in its first 15 months.
Funny how choice of words can vary so greatly for two different brands. RDF is unfortunately almost a chronic disease in tech media.