The Seiko 1221-5140 is a watch model based on the 1221 movement.
Parts List
| ESFN97KN00 | crystal - crystal (inorganic) |
| 30N63NA1 | crown - crown |
| 0H1800B01 | case back gasket - case back gasket |
| HK38A | band - leather band |
| 06P25CGH | hand - hour hand |
| 06P25CGM | hand - minute hand |
| 3BA075F1BNG | others - second hand |
| A130AS | others - push pin (for lb) |
| DZ0040B01 | others - crown and stem gasket |
| 06SC11NG | others - second hand |
| 0351117 | others - winding stem |
| 12210250XS18 | others - dial |
| 122110 | others - machine code |
| 1221514025 | others - case |
| 83135330 | others - case ring |
Caliber 1221
