The Seiko 2320-021A is a watch model based on the 2320 movement.
Parts List
| 225R02GNG0 | crystal - crystal |
| 30M28NA4 | crown |
| 0G1675B01 | case back gasket - case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0H2200B09 | crystal gasket - crystal gasket |
| FK982 | band - band |
| 08R16CGH | others - hour hand |
| 08R16CGM | others - minute hand |
| 0354811 | others - winding stem |
| 83119870 | others - case ring |
| 2320021A26 | others - case |
| 83349045 | others - bezel |
| 23201 | others - machine code |
| 232014203804 | others - dial |
Caliber 2320
