The Seiko 2P20-5090 is a watch model based on the 2P20 movement.
Parts List
| ESZN11JN01 | crystal |
| ESZN11JN | crystal |
| 30NA9NA1 | crown |
| 0F150NA11 | case back gasket - case back gasket |
| 0F150NA1 | case back gasket |
| DA007BA1 | case back gasket |
| B5328G | band - metal band |
| B5329G | band - metal band |
| B5329G-BK3G | clasp - clasp |
| B5328G-BK3G | clasp - clasp |
| 06Y09DGH | hand - hour hand |
| 2CG060LABDG | hand - minute hand |
| 2P200150XS19 | others - dial |
| 2P200170XG14 | others - dial |
| 2P20509025 | others - case |
| 82731590 | others - case ring |
| B5328G-EP2 | others - endpiece |
| B5329G-EP2 | others - endpiece |
| DA007BA11 | others - crown and stem gasket |
| 06Y07DGH | others - hour hand |
| 06Y07DGM | others - minute hand |
| 06Y01DGM | others - minute hand |
Caliber 2P20
