The Seiko Y131-6180 is a watch model based on the Y131 movement.
Parts List
| 220N52LN01 | crystal |
| 220N54LM01 | crystal |
| 35MP8NF1 | crown |
| 86569580 | case back gasket |
| DK72E | band - leather band |
| DK83B | band - leather band |
| 10SC10AG | others - second hand |
| 12SC50TG | others - second hand |
| A120BS | others - push pin (for lb) |
| 0354786 | others - winding stem |
| 09CP0AGH | others - hour hand |
| 09CP0AGM | others - minute hand |
| EZ0058B01 | others - crown and stem gasket |
| 09C38ADM | others - minute hand |
| 09C44FGH | others - hour hand |