Swiss movement Unidirectional rotating bezel 5 ATM water resistance Day and date display Screw-down crown Screw-back case Crystal...Mineral glass The day of the week on the calendar can only be changed by turning the hands. Product Condition ☆ Currently running. ☆ Battery replaced. ☆ Water resistance is not guaranteed. ☆ Sold as is. ☆☆ Operation has been confirmed, but no warranty is provided. Returns are not accepted to prevent product substitution, so please purchase only if you understand that this is a used item. Also, please refrain from purchasing if you are concerned about home storage or are overly sensitive. Please refrain from price negotiations.