The Seiko 2P21-5130 is a watch model based on the 2P21 movement.
Parts List
| ESBW37HN01 | crystal |
| 32M19NA1 | crown |
| 0F165BAA5 | case back gasket - case back gasket |
| 86582690 | crystal gasket |
| HK29B | band - leather band |
| HK31B | band - leather band |
| 3BA075F1BNG | others - second hand |
| 07SC43NG | others - second hand |
| 1BC047A1BAA | others - hour hand |
| 2BC070A1BAA | others - minute hand |
| 0351236 | others - winding stem |
| 2P210340XS19 | others - dial |
| 2P210500XS19 | others - dial |
| 2P21513075 | others - case |
| 2P219 | others - machine code |
| 82812030 | others - case ring |
| A120AS | others - push pin |
| EB0055B01 | others - crown and stem gasket |
| 07T27AGM | others - minute hand |
| 07T27AGH | others - hour hand |
Caliber 2P21
