The Seiko 2P20-0A90 is a watch model based on the 2P20 movement.
Parts List
| 210N08JM01 | crystal |
| 35ME0EH1 | crown |
| 0A1900N01 | case back gasket - case back gasket |
| 0A1900N0 | case back gasket |
| ZGA05F | band - leather band |
| ZGA05F-LB | band - leather without buckle |
| ZGA06F | band - leather band |
| ZGA06F-LB | band - leather without buckle |
| ZGA07F | band - leather band |
| ZGA07F-LB | band - leather without buckle |
| ZGA07F-BK8S | clasp - clasp |
| ZGA06F-BK8S | clasp - clasp |
| ZGA05F-BK8S | clasp - clasp |
| 08Y02NGM | hand - minute hand |
| 08Y04NGH | hand - hour hand |
| 2P200A901B | others - case |
| 2P200E80X974 | others - dial |
| 2P200E80X984 | others - dial |
| 2P200E80X994 | others - dial |
| 2P209 | others - machine code |
| A110AS | others - push pin |
| ZGA05F-EP2 | others - endpiece |
| 82800580 | others - case ring |
| 0351236 | others - winding stem |
| ZGA06F-EP2 | others - endpiece |
| ZGA07F-EP2 | others - endpiece |
| DZ0041B01 | others - crown and stem gasket |
Caliber 2P20
