I disagree, we already have watches with weak processors (e.g Pebble) but they lack features. Android can bring those, and ARM processors are powerful enough.

I disagree, we already have watches with weak processors (e.g Pebble) but they lack features. Android can bring those, and ARM processors are powerful enough. Indeed, the only difference between an Android watch and a full-size smartphone would be the smaller casing. The largest component nowadays is the battery, which can be greatly reduced thanks to the smaller screen. So, I don't see a major obstacle to an Android watch, and the benefits of it are worth the CPU. Of course temperature will be a concern but I'm sure demand will produce lower-powered CPUs powerful enough to run Android.