The Seiko 1221-5800 is a watch model based on the 1221 movement.
Parts List
| ESXN69HV02 | crystal - crystal (inorganic) |
| 32N11NA1 | crown |
| 0F200NA11 | case back gasket |
| GA17B | band - metal band |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 122110 | others - machine code |
| 12211060XN14 | others - dial |
| 12215800EA | others - case |
| 82722770 | others - case ring |
| 07P31DGM | others - minute hand |
| 07P31DGH | others - hour hand |
Caliber 1221
