The Seiko Y563-8120 is a watch model based on the Y563 movement.
Parts List
| 310T18ANS0 | crystal - crystal |
| 310T40ANG0 | crystal |
| 35M86NS1 | crown |
| 35M86NF1 | crown |
| FH2981B01 | case back gasket - case back gasket |
| QA72A | band - metal band |
| DB0060B01 | others - crown and stem gasket |
| 0354576 | others - setting/winding stem |
| A180CS | others - push pin |