The Seiko 2320-5440 is a watch model based on the 2320 movement.
Parts List
| ES1N04GN00 | crystal |
| 30M06NA1 | crown - crown |
| 30M06NS1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A1900N01 | case back gasket - case back gasket |
| 0A1900N0 | case back gasket |
| PV342 | band - band |
| PV363 | band - band |
| PV352 | band - band |
| 06R06DGH | others - hour hand |
| 06R06DSH | others - hour hand |
| 06R06DSM | others - minute hand |
| 06R06DGM | others - minute hand |
| A100BS | others - push pin (for mb) |
| 2320071032Q4 | others - dial |
| 232007203359 | others - dial |
| 2320072034C9 | others - dial |
| 23201 | others - machine code |
| 2320544025 | others - case |
| 83119320 | others - case ring |
| 0354811 | others - winding stem |
| 232054402E | others - case |
Caliber 2320
