The Seiko 5C20-5040 is a watch model based on the 5C20 movement.
Parts List
| ES4N84GN00 | crystal - crystal |
| 30M22NA1 | crown - crown |
| 0H2702N01 | case back gasket - case back gasket |
| BQA24C | band - leather band |
| BQJ21G | band - leather band |
| BQZ04C | band - leather band |
| 06B06NG | hand - sub hand |
| 09T32ZGH | hand - hour hand |
| 09T32ZGM | hand - minute hand |
| 09T04NGM | others - minute hand |
| 0354856 | others - winding stem |
| 0354800 | others - winding stem |
| 5C20504025 | others - case |
| 5C2050402N | others - case |
| 5C205060XB14 | others - dial |
| 5C205060XG14 | others - dial |
| 5C205070X994 | others - dial |
| 5C209 | others - machine code |
| 82732880 | others - case ring |
| A190BS | others - push pin |
| 0Z0060B01 | others - crown and stem gasket |
| 1BA060A0BNG | others - hour hand |
| 09T04NGH | others - hour hand |
Caliber 5C20
Other models with the same movement
| 5C20-5000 |
| 5C20-5010 |
| 5C20-5020 |
| 5C20-5030 |
| 5C20-6000 |
| 5C20-6009 |
| 5C20-6010 |
| 5C20-6020 |