The Seiko 1221-0110 is a watch model based on the 1221 movement.
Parts List
| 185N29GN00 | crystal - crystal (inorganic) |
| 30NB3NA1 | crown - crown |
| 0H1700B01 | case back gasket - bezel gasket |
| 86568030 | crystal gasket - plastic gasket for crystal |
| ML37A | band - leather band |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| A130AS | others - push pin (for lb) |
| 1221011025 | others - case |
| 12210820XS14 | others - dial |
| 122110 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
| 82710570 | others - case ring |
| 08PB7AGM | others - minute hand |
| 08PB7AGH | others - hour hand |
Caliber 1221
