The Seiko 2P21-0C10 is a watch model based on the 2P21 movement.
Parts List
| 190W30HK01 | crystal |
| 30MA2NA1 | crown - crown |
| 0A1900N01 | case back gasket - case back gasket |
| 86570340 | crystal gasket |
| HB40A | band - metal band |
| HB41A | band - metal band |
| 08SC14NG | others - second hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82801820 | others - case ring |
| 2P210C10 | others - case back |
| 2P210C1075 | others - case |
| 2P210C1098 | others - case |
| 2P210H70XS19 | others - dial |
| 2P210H80XG14 | others - dial |
| 2P219 | others - machine code |
| 0351236 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 08T24AGH | others - hour hand |
| 08T24DGM | others - minute hand |
| 08T24AGM | others - minute hand |
| 08T24N1H | others - hour hand |
Caliber 2P21
