The Seiko 4207-5020 is a watch model based on the 4207 movement.
Parts List
| RE2W03L50A | crystal |
| RE2W03LM | crystal |
| RE2W03LM01 | crystal |
| 40MC5NN1 | crown - crown (3h) |
| FH2030B04 | case back gasket |
| DB0055B0 | case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| 86590330 | crystal gasket |
| B5485G | band |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| 07C14EGM | others - minute hand |
| 07C14EGH | others - hour hand |
| 0351420 | others - winding stem |