The Seiko 2P21-0230 is a watch model based on the 2P21 movement.
Parts List
| 200P01HN03 | crystal |
| 200W77HN00 | crystal |
| 30M91NA1 | crown |
| 30M91NG1 | crown |
| 0F160BAA2 | case back gasket |
| 86590850 | crystal gasket |
| DK48C | band - leather band |
| DK55C | band - leather band |
| 3BA125F1BNG | others - second hand |
| DZ0040B01 | others - crown and stem gasket |
| 82810390 | others - case ring |
| 2P21023075 | others - case |
| 2P2102307N | others - case |
| 2P210810XS19 | others - dial |
| 2P210820XS19 | others - dial |
| 2P219 | others - machine code |
| A110AS | others - push pin |
| 0351236 | others - winding stem |
| 08T53AGH | others - hour hand |
| 08T53AGM | others - minute hand |
| 08T55NGH | others - hour hand |
| 08SC29NG | others - second hand |
| 08T55NGM | others - minute hand |
Caliber 2P21
