While the crown can be used for operation, its functionality hasn't been fully verified. I've checked the automatic winding and operation, but proper function hasn't been confirmed. Therefore, the item's operation is unconfirmed. I am also listing this item on other sites, so please leave a comment before purchasing. To prevent product substitution, returns and exchanges are not accepted. Thank you for your understanding. Please only purchase if you understand that this item has been stored at home. I am selling this item because I don't have a need for it. Please understand that this item is not recommended for those who are overly concerned about details or seek perfection. I am a novice in assessing the item, so I apologize for any oversights. Returns and exchanges are not accepted. Thank you for your understanding. The actual color may differ from the photos. Thank you for your understanding. I am a novice in assessing the item, so I apologize for any oversights.