The Seiko 2P21-0D30 is a watch model based on the 2P21 movement.
Parts List
| 235W08JN01 | crystal |
| 30MA2EK1 | crown |
| 0A2100N01 | case back gasket |
| AM05A | band - metal band |
| 0351236 | others - winding stem |
| 2P210D30 | others - case back |
| 2P210D30RC | others - case |
| 2P211A40XS19 | others - dial |
| 2P219 | others - machine code |
| 82811380 | others - case ring |
| A150BS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
| 13SC04ES | others - second hand |
| 09TD0ASM | others - minute hand |
| 09TD0ASH | others - hour hand |
Caliber 2P21
