The Seiko 2P21-0290 is a watch model based on the 2P21 movement.
Parts List
| 200P01HN03 | crystal |
| 200W77HN00 | crystal |
| 30M57NA1 | crown - crown |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0F155BAA1 | case back gasket - case back gasket |
| 86571150 | crystal gasket |
| DK50C | band - leather band |
| 3BA125F1BNG | others - second hand |
| 2BC080A1BAA | others - minute hand |
| A120BS | others - push pin (for lb) |
| 2P21029075 | others - case |
| 2P211020XS19 | others - dial |
| 2P219 | others - machine code |
| 82802650 | others - case ring |
| 0351236 | others - winding stem |
| 08T57AGH | others - hour hand |
| 08T57AGM | others - minute hand |
| 08SC29NG | others - second hand |
| 1BC055A1BAA | others - hour hand |
Caliber 2P21
