The Seiko 2320-0400 is a watch model based on the 2320 movement.
Parts List
| 200N10GN00 | crystal - crystal |
| 30M38NA1 | crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0G1700N01 | case back gasket |
| 86562580 | crystal gasket - plastic gasket for crystal |
| FG2050W01 | bezel gasket - bezel gasket |
| DK07B | band - band |
| DK06B | band - band |
| 09R05CGH | others - hour hand |
| 09R05CGM | others - minute hand |
| 09R05DGH | others - hour hand |
| 09R05DGM | others - minute hand |
| 0354811 | others - winding stem |
| 83119820 | others - case ring |
| 23201 | others - machine code |
| 23203930XS19 | others - dial |
| 23203930XY12 | others - dial |
| A130BS | others - push pin |
| 232004002L | others - case |
| 82301681 | others - bezel |
Caliber 2320
