36mm Seiko 7n43-8111. The watch was fully taken apart, cleaned, and used genuine seiko dial was added. This watch, in my opinion, is the absolute best option for someone who doesn’t want to spend the money on a Rolex day date. The band is aftermarket with original clasp. These are amazing watches. Very solid condition given age. There are 2 tiny spots on the watch dial, that are not really noticeable but I pictured, and light scratches on the crystal, however not really in bad enough shape to replace the crystal. Great for all genders. I can add the part number for the crystal upon purchase.