The Seiko 1220-5240 is a watch model based on the 1220 movement.
Parts List
| RECN17JN01 | crystal - crystal |
| 30N99NS1 | crown |
| 30N99N01 | crown |
| 0F230NA11 | case back gasket |
| LK17C | band - band |
| LK18C | band - band |
| 07L35DBH | others - hour hand |
| 07L35DBM | others - minute hand |
| 07L35DGH | others - hour hand |
| 07L35DGM | others - minute hand |
| 1CH050A1BNG | others - hour hand |
| 0351117 | others - winding stem |
| 12200410XN19 | others - dial |
| 12200410XS19 | others - dial |
| 122010 | others - machine code |
| A190BS | others - push pin |
| 122052402N | others - case |
| 82721590 | others - case ring |
| 12205240HE | others - case |
| DZ0040B01 | others - crown and stem gasket |
Caliber 1220
