Is it safe to turn the crown backwards to set the time?

Yes, it is safe to turn the crown counter clockwise to set your watch.

For detailed setting instructions for your watch, please visit www.citizenwatch.com/support

You will need your movement caliber number, which can be located on the caseback per the illustration below; the caliber number typically comprises four digits, starting with a letter (e.g. E870).

https://support.citizenwatch.com/

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"Is it safe to turn the crown backwards to set the time?"

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