The Seiko 1221-0220 is a watch model based on the 1221 movement.
Parts List
| 185A02SN02 | crystal |
| 185W45SN01 | crystal - crystal |
| 30M57NA1 | crown - crown |
| 0F160BAA5 | case back gasket - case back gasket |
| 0F155BAA5 | case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| HL53A | band - leather band |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| 0351117 | others - winding stem |
| 82822150 | others - case ring |
| A120AS | others - push pin |
| 12210220 | others - case back |
| 1221022075 | others - case |
| 122110 | others - machine code |
| 12211410XS14 | others - dial |
| 12211430XS14 | others - dial |
| 08PB7AGM | others - minute hand |
| 08PB7AGH | others - hour hand |
Caliber 1221
