The Seiko 2P20-5810 is a watch model based on the 2P20 movement.
Parts List
| REHN29HR01 | crystal |
| 30ND3NK1 | crown |
| 0G2450B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| BMZ22E | band - leather band |
| 1CE047LABDG | others - hour hand |
| 2CE070LABDG | others - minute hand |
| 06Y13DGH | others - hour hand |
| 06Y13DGM | others - minute hand |
| 2P201520XN14 | others - dial |
| 2P205810 | others - case back |
| 2P205810J7 | others - case |
| 82812250 | others - case ring |
| A160BS | others - push pin |
| 07Y11DGM | others - minute hand |
| 07Y11DGH | others - hour hand |
Caliber 2P20
