A Good Automatic Movement Watch: You need to keep time and coordinate things with your family after the event. You’ll have to really shop and find one with a good warranty.
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I am sorry but the part about the warranty made me laugh. TEOTWAWKI but the watch shop is still open
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You shouldn’t have laughed. A watch maker who is confident enough to offer a GOOD warrantee does so because he expects few (or no) claims to be filed against the warranted product. :6)
I am fairly sure my faithful Bulova's warranty ran out a long time ago.
I have a $4 watch from Wallyworld that is five years old. Takes all the abuse I can give including thousands of shock loads. Changed the battery once. Yes it is crystal based. Learn to tell time from the sky. A watch in a SHTF scenario is just something else to manage.