By CJ Horn, President of Happily Ever Timepieces Grand Seiko "Soko Frost" (72-hour power reserve) by Happily Ever Timepieces If you have ever looked at a watch spec sheet and seen "Power Reserve: 42 hours" and thought, "Is that good?"... you are not alone. Most people skip right past it. Then their watch stops on a Saturday afternoon and suddenly it is the most important number they have ever seen. Let's break it down. And no, you do not need an engineering degree. What Is a