The Seiko 1221-5880 is a watch model based on the 1221 movement.
Parts List
| SAFN93SK01 | crystal - crystal (sapphire) |
| 25N09DE1 | crown |
| 0G1890B02 | case back gasket - case back gasket |
| 0G1940B01 | case back gasket |
| 3K03A | band - leather band |
| 81833475 | band - other |
| 06P73VGH | hand - hour hand |
| 06P73VGM | hand - minute hand |
| 06SC273G | hand - second hand |
| 122110 | others - machine code |
| 12211230XS14 | others - dial |
| 12215880GC | others - case |
| 82810550 | others - case ring |
| A100AS | others - push pin |
| A120AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
Caliber 1221
