The Seiko 1221-5320 is a watch model based on the 1221 movement.
Parts List
| ES6W75HN00 | crystal - crystal (inorganic) |
| 32M21NA1 | crown - crown |
| 0F150BAA3 | case back gasket |
| 86565810 | crystal gasket - plastic gasket for crystal |
| ZL31A | band - leather band |
| 3BA075F1BNG | others - second hand |
| 1AA042A1BNG | others - hour hand |
| 2AA062A1BNG | others - minute hand |
| 07P27DGH | others - hour hand |
| 06P15NGM | others - minute hand |
| 12210480XG14 | others - dial |
| 122110 | others - machine code |
| 1221532075 | others - case |
| EB0055B01 | others - crown and stem gasket |
| 06SC11NG | others - second hand |
| 0351117 | others - winding stem |
| A120AS | others - push pin |
| 82704130 | others - case ring |
Caliber 1221
