I just bought this watch so I can't yet give an endurance review of it.  But it has all the functions I was looking for and even has a feature that makes changing to and from daylight savings time easy.  And, being solar operated, it never will need a new battery. And, yes, it works just fine indoors with artificial light.  But I don't expect the strap to last as long as the watch itself will; and the buckle -- a childish pink color that makes the watch look like a toy -- is made from cheap plastic that I doubt will survive many times of unbuckling and buckling.  Fortunately, the watch is water resistant so I don't have to take it off to bathe;  I only need to use that fragile buckle when I dress up and put my dressier watch on.