The Seiko 3421-5050 is a watch model based on the 3421 movement.
Parts List
| SA3N08GN00 | crystal |
| 30M06NA1 | crown - crown |
| 30M06NS1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A1800N01 | case back gasket |
| HS15A | band - band |
| 08SC14NG | others - second hand |
| 06T02DGH | others - hour hand |
| 06T02DGM | others - minute hand |
| 0354546 | others - winding stem |
| 83118850 | others - case ring |
| 3421505025 | others - case |
| 342101403274 | others - dial |
| 34211 | others - machine code |
| B090AS | others - push pin |
Caliber 3421
