The Seiko 2320-5990 is a watch model based on the 2320 movement.
Parts List
| SA4N10SN00 | crystal - crystal |
| 30M16NA3 | crown - crown |
| 0A1700N01 | case back gasket - case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| DK21A | band - band |
| DK20A | band - band |
| A110BS | others - push pin (for mb) |
| 23201 | others - machine code |
| 232018303GX4 | others - dial |
| 232018309994 | others - dial |
| 232059904F | others - case |
| 83118100 | others - case ring |
| 0354811 | others - winding stem |
| 07R02DGH | others - hour hand |
| 07R02DGM | others - minute hand |
Caliber 2320
