The Seiko 5421-0010 is a watch model based on the 5421 movement.
Parts List
| 170N23AN00 | crystal |
| 35M94NS1/NA1 | crown |
| 0A1400N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
Caliber 5421
Seiko 5421-0010 Watch Guide
The Seiko 5421-0010 is a watch model based on the 5421 movement.
| 170N23AN00 | crystal |
| 35M94NS1/NA1 | crown |
| 0A1400N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |