The Seiko 1220-5400 is a watch model based on the 1220 movement.
Parts List
| RE1W23SN01 | crystal |
| 30M49NA1 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0G195BAA1 | case back gasket |
| 86582270 | crystal gasket |
| QB28A | band - metal band |
| 07R51DGH | others - hour hand |
| 0351117 | others - winding stem |
| 12200640XB14 | others - dial |
| 12200640XG14 | others - dial |
| 122010 | others - machine code |
| 122054005N | others - case |
| 122054006R | others - case |
| 82810350 | others - case ring |
| A160BS | others - push pin |
| 07R51DGM | others - minute hand |
Caliber 1220
