The Seiko 1221-0090 is a watch model based on the 1221 movement.
Parts List
| 190A01SN02 | crystal |
| 190N77SN00 | crystal |
| 27N01NA5 | crown |
| 0H1550B01 | case back gasket |
| MK11B | band - leather band |
| 08S35CGH | hand - hour hand |
| 08S35CGM | hand - minute hand |
| 08S49DGH | hand - hour hand |
| 08S49DGM | hand - minute hand |
| 08SS11VG | hand - second hand |
| 122100904FA | others - case |
| 12210590XG19 | others - dial |
| 12210930XG14 | others - dial |
| 122110 | others - machine code |
| 82706670 | others - case ring |
| A110AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
| 08SS09VG | others - second hand |
Caliber 1221
