The diameter to the widest point is 43 mm; diameter to widest point + crown is 47.1 mm; thickness is 12 mm; lug size is 22 mm; type of shroud screws = cross; depth rating is 200 meters
This is a Seiko Kinetic Divers Watch 200 m called Baby Tuna. I have had this for 7-8 years and works great. This is a rare 5m23-6a19 model. usual scratches and I have deleted last three digits of serial number. manufacturing date is approx. 1984-1992. I bought it used and it has been working great.