BulovaMen's Classic Sutton 3-Hand 21-Jewel Automatic Watch, 42 Hour Power Reserve, Skeleton Dial, Luminous Hands, 100M Water Resistant, 43mm

what is the power reserve of this bulova?

Es original y si lo es porque atrás hay una marca de japon

How is the wristband adjusted for size? Does a jeweler have to remove any “links” ??

How long is average for this watch to run before dying after taking it off? Hubby says his has been dead by morning a few times... only a month old.