The Seiko 1221-5760 is a watch model based on the 1221 movement.
Parts List
| RECN31JE10 | crystal - crystal (inorganic) |
| 35NM9N01 | crown - crown |
| 35NM9NA1 | crown - crown |
| 0F240NA11 | case back gasket |
| AA36B | band - metal band |
| AA37B | band - metal band |
| 08P49DGH | hand - hour hand |
| 08P49DGM | hand - minute hand |
| 1AH055A1BNG | others - hour hand |
| 08SC01NG | others - second hand |
| 82721890 | others - case ring |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
| 122110 | others - machine code |
| 12211070XB14 | others - dial |
| 12211070XS14 | others - dial |
| 1221576011 | others - case |
| 122157601B | others - case |
| 3BA100F1BNG | others - second hand |
| 2AH080A1BNG | others - minute hand |
Caliber 1221
