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Fully Automatic Winding: Powered by the arm’s movement; requires at least 8 hours of wear daily for precise timing. Can also be wound manually by rotating clockwise about 15 times (without pulling out the crown).
Manual Winding: Requires manual winding (clockwise rotation without pulling out the crown), typically about 15 turns. Over-winding can damage the chain, but once fully wound, it runs accurately for roughly 24 hours.