The Seiko 5421-5250 is a watch model based on the 5421 movement.
Parts List
| K01N60GN00 | crystal - crystal |
| 35M94NA1 | crown |
| 35M94NS1 | crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0G1601N01 | case back gasket - case back gasket |
| ZS14A | band - band |
| ZS15A | band - band |
| 06T04DGM | others - minute hand |
| 07SC02NG | others - second hand |
| 0354705 | others - winding stem |
| 5421525025 | others - case |
| 82707760 | others - case ring |
| 542152502N | others - case |
| 54210540XG14 | others - dial |
| 54210540XS14 | others - dial |
| 54211 | others - machine code |
| B090AS | others - push pin |
| 07T04N1H | others - hour hand |
Caliber 5421
