The Seiko 6531-5020 is a watch model based on the 6531 movement.
Parts List
| SA9N10GN00 | crystal |
| 35R34NS1 | crown - crown |
| 35R34NA1 | crown - crown |
| 0H2600N01 | case back gasket - case back gasket |
| GK49A | band - band |
| 10T20CLH | others - hour hand |
| 10T18CLM | others - minute hand |
| 0354765 | others - winding stem |
| 6531502025 | others - case |
| 82710240 | others - case ring |
| 65315040XG14 | others - dial |
| 65319 | others - machine code |
| A200BS | others - push pin |
| 13SC04A2 | others - second hand |