The Seiko 2P21-0C90 is a watch model based on the 2P21 movement.
Parts List
| 175N04SN01 | crystal - crystal |
| 30MA2NS1 | crown - crown |
| 0H1610N01 | case back gasket |
| MK21D | band - band |
| 07TA0NBH | others - hour hand |
| 07SC02AB | others - second hand |
| 0351236 | others - winding stem |
| 07TA0NBM | others - minute hand |
| 2P210C904C | others - case |
| 82813260 | others - case ring |
| 2P210C90 | others - case back |
| 2P211A00X913 | others - dial |
| 2P219 | others - machine code |
| A100AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
Caliber 2P21
