The Seiko 3421-5030 is a watch model based on the 3421 movement.
Parts List
| SA3N78GN00 | crystal - crystal |
| 30M06NA1 | crown - crown |
| 30M06NS1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A1900N01 | case back gasket - case back gasket |
| 0A1900N0 | case back gasket |
| B861S | band - band |
| B861G | band - band |
| B861G-BK5G | clasp - clasp |
| B861S-BK5S | clasp - clasp |
| 08SC14NG | others - second hand |
| 06T02DGH | others - hour hand |
| 06T02DGM | others - minute hand |
| 06T02DSH | others - hour hand |
| 06T02DSM | others - minute hand |
| 0354546 | others - winding stem |
| 3421503011 | others - case |
| 83118450 | others - case ring |
| 3421503025 | others - case |
| 3421009031N3 | others - dial |
| 342100903274 | others - dial |
| 34211 | others - machine code |
| B090BS | others - push pin |
| 08SC14NS | others - second hand |
Caliber 3421
