The Seiko 2P21-5340 is a watch model based on the 2P21 movement.
Parts List
| ESDW37JN01 | crystal |
| 30M57NA1 | crown - crown |
| 0F155BAA5 | case back gasket |
| 0F160BAA5 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| DS50A | band - metal band |
| DS51A | band - metal band |
| 3BA075F1BNG | others - second hand |
| 1BC047A1BNG | others - hour hand |
| 2BC070A1BNG | others - minute hand |
| 07SC17NG | others - second hand |
| 1BA045A1BNG | others - hour hand |
| 06T11NGH | others - hour hand |
| 06T03DGM | others - minute hand |
| 0351236 | others - winding stem |
| 82822650 | others - case ring |
| 2P210960XG14 | others - dial |
| 2P210970XS14 | others - dial |
| 2P215340 | others - case back |
| 2P21534075 | others - case |
| 2P2153407N | others - case |
| 2P219 | others - machine code |
| A100AS | others - push pin |
| 07T27NGH | others - hour hand |
| 07T27NGM | others - minute hand |
| 2BA060A1BDG | others - minute hand |
| 2BA067A1BNG | others - minute hand |
Caliber 2P21
