The Seiko 3421-5170 is a watch model based on the 3421 movement.
Parts List
| BA0N88GN00 | 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 |
| HS21A | band - band |
| HS20A | band - band |
| 06T10NBH | others - hour hand |
| 06T10NBM | others - minute hand |
| 07T10NSH | others - hour hand |
| 06T12NSM | others - minute hand |
| 08SC14NG | others - second hand |
| 0354546 | others - winding stem |
| 83117900 | others - case ring |
| 3421517025 | others - case |
| 34210410XS13 | others - dial |
| 34210420XS29 | others - dial |
| 34211 | others - machine code |
| A110AS | others - push pin |
| 3421517011 | others - case |
| 08SC14NS | others - second hand |
Caliber 3421
