The Seiko 5C20-5020 is a watch model based on the 5C20 movement.
Parts List
| ESEN00JN01 | crystal |
| 30M22NA1 | crown - crown |
| 0H2702N01 | case back gasket - case back gasket |
| BPJ13G | band - leather band |
| BPJ14G | band - leather band |
| BPJ24G | band - leather band |
| BPZ07G | band - leather band |
| BPZ08C | band - leather band |
| 06B06NG | hand - sub hand |
| 09T44DGM | hand - minute hand |
| 09T44NGH | hand - hour hand |
| 09T18CGM | others - minute hand |
| 0354856 | others - winding stem |
| 0354800 | others - winding stem |
| 5C20502025 | others - case |
| 5C205020EF | others - case |
| 5C205040XG18 | others - dial |
| 5C205050XN19 | others - dial |
| 5C209 | others - machine code |
| 82732880 | others - case ring |
| A180BS | others - push pin |
| 08T02ABH | others - hour hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5C20
Other models with the same movement
| 5C20-5000 |
| 5C20-5010 |
| 5C20-5030 |
| 5C20-5040 |
| 5C20-6000 |
| 5C20-6009 |
| 5C20-6010 |
| 5C20-6020 |