The Seiko 9S54-0020 is a watch model based on the 9S54 movement.
Parts List
| 320A11S20A | crystal |
| 240PZ5SN02 | crystal - crystal (sapphire) |
| 320A11S20B | crystal - crystal (sapphire) |
| 9K55A5STS0 | crown |
| 9K60C3STS0 | crown - crown |
| 0F290BAD2 | case back gasket - case back gasket |
| 0F320BAD2 | case back gasket - bezel gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| 86570850 | crystal gasket - crystal plastic gasket |
| DEA4AW | band - band |
| 2FG130SBCZL | others - minute hand |
| 3BA135AACZL | others - second hand |
| 1FG085SBCZL | others - hour hand |
| 9S54002001A | others - case |
| 82316259 | others - bezel |
| 0351440 | others - winding stem |
| 89926519 | others - casing spring |
| 82846275 | others - case ring |
| 81621239 | others - endpiece screw |
| S190BS | others - push pin |
| DC010BAD2 | others - crown and stem gasket |
Other models with the same movement