The Seiko 2P21-5D9B is a watch model based on the 2P21 movement.
Parts List
| SA9N84SN01 | crystal - crystal |
| 30M98NA1 | crown |
| 0H1860B01 | case back gasket |
| ZL44A | band - band |
| 07SC02NG | others - second hand |
| 0351236 | others - winding stem |
| 82800960 | others - case ring |
| 2P215D9B25 | others - case |
| 2P215D9B | others - case back |
| 2P211B20XG14 | others - dial |
| 2P219 | others - machine code |
| A120AS | others - push pin |
| 06T26ALH | others - hour hand |
| 06T26ALM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 2P21
