Originally Posted by
snowman
I've read a few places, the same statement "high accuracy quartz or high end quartz, generally categorized as watches that are specified to plus or minus 10 seconds a year."
I'm not sure who defines this (COSC?), but the non-Precisionist Bulovas don't meet this (the full Precisionists do, apparently) according to their spec (I think the issue is that Bulova never claimed these were as accurate, the manual says "gives accuracy within 5 seconds/month" - That could just be to distinguish the dearer models, but is supposed to be due to the size of the batteries).
I'm not trying to discredit the Bulovas, I think they're good watches, especially at their price point, but I don't believe they actually qualify as HAQs, even if some individual watches exceed their spec.
A Tuning Fork watch was High Accuracy in its time, but probably doesn't better most normal quartz watches today.
M