How many turns of the crown to lock it?

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Originally Posted by Ec2016

Curious as to how many turns of the crown there should be, before the crown is locked. I was under the impression that most Rolex watches should have at least 2 full turns of the crown to lock it.

The important thing is to turn the crown until the Rolex crown is exactly upright. Only then will you have superlative water resistancy.