I bought this watch for the 10 year battery life and low price.  I seriously doubt the watch will last long enough for the battery to run down.  I wear it at work and it just won't stand up to the rigors of my job.  I don't have some mega-tough construction job either. The crown worked it's way loose already and the "crystal" is scratched up after only a few weeks.
Also...This watch is small on my wrist.  I don't have large wrists either.  I'd be really really angry had this watch cost more.  As is...it's just a bit of a letdown.  Perhaps this watch would be suitable for a child...to wear to Sunday school only...for ten years.
You get what you pay for and this watch is extremely cheap.