The Seiko 2P20-5A90 is a watch model based on the 2P20 movement.
Parts List
| ESFN06JN01 | crystal |
| 30M98NA1 | crown |
| 0H1720N01 | case back gasket - case back gasket |
| G5053C | band - metal band |
| G5053G | band - metal band |
| G5053G-BK5G | clasp - clasp |
| G5053C-BK5S | clasp - clasp |
| 1CE035L0BDG | others - hour hand |
| 2CE052L0BDG | others - minute hand |
| 2P200B70XG14 | others - dial |
| 2P200B80XN14 | others - dial |
| 2P205A9025 | others - case |
| 2P205A90EA | others - case |
| 2P209 | others - machine code |
| 82801020 | others - case ring |
| A100AS | others - push pin |
| 0351236 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 05Y04DGM | others - minute hand |
| 2CA052A0BNG | others - minute hand |
| 05Y02NGM | others - minute hand |
| 05Y04DGH | others - hour hand |
| 1CA035A0BNG | others - (24 hour hand) |
| 05Y02NGH | others - hour hand |
Caliber 2P20
