The Seiko 5420-5450 is a watch model based on the 5420 movement.
Parts List
| K01N74GN00 | crystal - crystal |
| 35N18NA1 | crown |
| 0A1500N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| HC04A | band - band |
| XHC04A | band - leather band |
| 05R04N1H | others - hour hand |
| 5420545026 | others - case |
| 82709440 | others - case ring |
| 54200890XG14 | others - dial |
| 54200890XS14 | others - dial |
| 54209 | others - machine code |
| 0354706 | others - winding stem |
| 05R08NGM | others - minute hand |
Caliber 5420
