The Seiko 6309-525J is a watch model based on the 6309 movement.
Parts List
| ES1W14GN | crystal |
| ES1W14GN00 | crystal - crystal (inorganic) |
| 40M58NA1 | crown - crown |
| 40M58NS1 | crown - crown |
| FH2980B | case back gasket |
| FH2980B01 | case back gasket - case back gasket |
| 86177870 | crystal gasket - plastic gasket for crystal |
| G027S | band - leather band |
| 09B72LGH | hand - hour hand |
| 09B72LGM | hand - minute hand |
| 6309525J61 | others - case |
| 630953008B24 | others - dial |
| 630953018B24 | others - dial |
| 63099 | others - machine code |
| 83020647 | others - dial ring (upper) |
| 83022871 | others - dial ring (lower) |
| 0354601 | others - winding stem |
| 82707380 | others - case ring |
| 0801601 | others - date dial |
| 0884678 | others - holding ring for dial |
| A190CS | others - push pin |
| DJ0060B | others - crown gasket |
| DJ0060B01 | others - crown gasket |
| 13SB11NG | others - second hand |
Caliber 6309
