The Seiko 8420-5450 is a watch model based on the 8420 movement.
Parts List
| SA6N26SN00 | crystal - crystal |
| 25M02NA3 | crown |
| 0G1900N01 | case back gasket - case back gasket |
| DK01B | band - band |
| 07R01CGH | others - hour hand |
| 07R01CGM | others - minute hand |
| 842054504F | others - case |
| 82703160 | others - case ring |
| 84205530XG18 | others - dial |
| A140BS | others - push pin |
| 0354815 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
