The Seiko 6309-4090 is a watch model based on the 6309 movement.
Parts List
| SA3W92GN00 | crystal |
| 40M54NS1 | crown |
| FH2981B01 | case back gasket - case back gasket |
| 86572200 | crystal gasket |
| Z1467J | band - metal band |
| 09B76PSH | hand - hour hand |
| 09B76PSM | hand - minute hand |
| 6309409061 | others - case |
| 6309419XXS13 | others - dial |
| 63099 | others - machine code |
| 84312622 | others - dial ring (lower) |
| 84320883 | others - dial ring (upper) |
| A200CS | others - push pin |
| 0354601 | others - winding stem |
| 0801601 | others - date dial |
| 0884931 | others - holding ring for dial |
| DJ0060B01 | others - crown gasket |
| 13SB11NS | others - second hand |
Caliber 6309
