The Seiko 1221-5340 is a watch model based on the 1221 movement.
Parts List
| ES6W27HN00 | crystal - crystal (inorganic) |
| 32M19NA1 | crown |
| 32M19NS1 | crown - crown |
| 0F150BAA1 | case back gasket - case back gasket |
| 86564830 | crystal gasket - plastic gasket for crystal |
| DS36A | band - metal band |
| DS37A | band - metal band |
| 07P81DGH | hand - hour hand |
| 07P81DGM | hand - minute hand |
| 07P81DSH | hand - hour hand |
| 07P81DSM | hand - minute hand |
| 07SC17NG | others - second hand |
| 3BA075F1BNG | others - second hand |
| 3BA075F1BNS | others - second hand |
| 07SC17NS | others - second hand |
| 0351117 | others - winding stem |
| 82701810 | others - case ring |
| EB0055B01 | others - crown and stem gasket |
| 12210520XG14 | others - dial |
| 12210520XS13 | others - dial |
| 122110 | others - machine code |
| 1221534075 | others - case |
| 122153407E | others - case |
Caliber 1221
