The Seiko 2320-581A is a watch model based on the 2320 movement.
Parts List
| RE1N74GN00 | crystal - crystal |
| 30M30NA4 | crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A2050N01 | case back gasket - case back gasket |
Caliber 2320
Seiko 2320-581A Watch Guide