The Seiko Y100-5439 is a watch model based on the Y100 movement.
Parts List
| ES8N50GN00 | crystal |
| 0A2700B0A | case back gasket |
| 0G0055B | case back gasket |
The Seiko Y100-5439 is a watch model based on the Y100 movement.
| ES8N50GN00 | crystal |
| 0A2700B0A | case back gasket |
| 0G0055B | case back gasket |