While the crown can be used for operation, I haven't confirmed that it works properly. Therefore, the operation is unconfirmed. I am also listing this on other sites, so please comment before purchasing. To prevent any swapping, no returns or exchanges are accepted. Thank you for your understanding. Only those who understand that this item has been stored at home, please purchase. I am selling this because I don't have a chance to use it. Please understand that this is not recommended for those who are nervous or seek perfection. I apologize if there are any deficiencies as this was judged by an amateur. No returns or exchanges are accepted. Thank you for your understanding. The color of the actual item may differ from the photos. Thank you for your understanding. I apologize if there are any deficiencies as this was judged by an amateur.