The Seiko 3421-0079 is a watch model based on the 3421 movement.
Parts List
| 180N10GN00 | crystal - crystal |
| 30M06NA1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0H1860N01 | case back gasket - case back gasket |
Caliber 3421
Seiko 3421-0079 Watch Guide