The Seiko 3421-5130 is a watch model based on the 3421 movement.
Parts List
| ES1W22GN00 | crystal - crystal |
| 35M78NS1 | crown - crown |
| FH2081B0A | case back gasket - case back gasket |
| 86177790 | crystal gasket - plastic gasket for crystal |
| 86177791 | crystal gasket - plastic gasket for crystal |
| 86178140 | bezel gasket - plastic gasket for bezel |
| DA05A | band - band |
| 08T02CKH | others - hour hand |
| 08T02CKM | others - minute hand |
| 08T02CSH | others - hour hand |
| 08T02CSM | others - minute hand |
| A100BS | others - push pin (for mb) |
| 3421031001G9 | others - dial |
| 342103103339 | others - dial |
| 34211 | others - machine code |
| 0354546 | others - winding stem |
| 83118650 | others - case ring |
| 3421513061A | others - case |
| 83348429 | others - bezel |
| 3421513061B | others - case |
| 08SC14NS | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 3421
