My Explorer II (Ref 216570)
 

While the newest model has the updated movement with increased power reserve and other movement enhancements, I prefer the look of my model (pictured on my wrist) because, true to the earlier Explorer II, it has the partially blacked-out hour, minute and GMT hands, giving them a "floating" appearance. The newer version (226570), which was released last year, removed that feature and made a few other case-related changes, like a slightly narrowed lug and wider bracelet, that are physically imperceptable unless you know exactly what to look for.