The Seiko 2P21-0A20 is a watch model based on the 2P21 movement.
Parts List
| 190W14GN00 | crystal - crystal |
| 30MA2NA1 | crown - crown |
| 0A1800N01 | case back gasket |
| 86570340 | crystal gasket |
| ZL22A | band - band |
| 08SC14NG | others - second hand |
| 08T02AGH | others - hour hand |
| 08T02AGM | others - minute hand |
| EZ0035B0A | others - crown and stem gasket |
| 2P210A2075 | others - case |
| 2P210C20XS19 | others - dial |
| 2P219 | others - machine code |
| A130BS | others - push pin |
| 0351236 | others - winding stem |
| 82801760 | others - case ring |
Caliber 2P21
