Mine turns from the outside, not sure if it is supposed to do this
Yes it is OK
BUT I REPEAT DON'T TOUCH YOUR REPLICA WATCHES WITH USELESS OPERATIONS
Just for winding, adjusting time and date and cleaning !!
And if you have a Chrono, don't use the chrono, unless it is completely necessary. If you need a chrono watch for some reasons you had better buying a quartz chrono.
ALE