The round one started working when I turned the crown. I haven't been able to check it for a long time, so the accuracy of the time is unconfirmed. I was able to change the time. The square one didn't work, so I think it needs repair. I was able to change the time. The belt has been replaced with an aftermarket one. I will be listing various items from my father's collection, which he has kept at his parents' house for a long time. He loves old things like Showa retro items, antiques, and watches. He especially loved collecting watches, and he had many old ones. I am not very knowledgeable myself, so I am listing them with reference to the internet, etc. Please judge the condition and shape from the photos. If you need more photos, please let me know and I will add them. If there are any discrepancies between the product and the description or name, please let me know. Please be aware that due to the age of the items and the long storage period, there may be age-related deterioration, stains, scratches, damage, odors, and breakage. The items will be delivered as they are, so please take care of any necessary repairs or adjustments yourself. No claims and no returns. Shipping will generally be via Yu-Yu Mercari or Raku-Raku Mercari. Please note that the shipping method may be changed depending on the situation. Items that are not scheduled to be shipped via Mercari will have a different shipping method, such as regular mail, selected from the beginning.