The Seiko 3421-5150 is a watch model based on the 3421 movement.
Parts List
| K01N12GN00 | crystal - crystal |
| 30M06NA1 | crown - crown |
| 30M06NS1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A1800N01 | case back gasket |
| PL06A | band - band |
| PL07A | band - band |
| PL05A | band - band |
| 08SC14NG | others - second hand |
| 08T02NGH | others - hour hand |
| 08T02NGM | others - minute hand |
| 08T02NSH | others - hour hand |
| 08T02NSM | others - minute hand |
| A110BS | others - push pin (for mb) |
| 342103500254 | others - dial |
| 34210350FLQ3 | others - dial |
| 34210350FY24 | others - dial |
| 34211 | others - machine code |
| 3421515025 | others - case |
| 83118060 | others - case ring |
| 0354546 | others - winding stem |
| 342151502E | others - case |
| 08SC14NS | others - second hand |
Caliber 3421
