The Seiko 3421-5180 is a watch model based on the 3421 movement.
Parts List
| K01N20GN00 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0H2700N01 | case back gasket |
Caliber 3421
Seiko 3421-5180 Watch Guide
The Seiko 3421-5180 is a watch model based on the 3421 movement.
| K01N20GN00 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0H2700N01 | case back gasket |