The Seiko Y481-0640 is a watch model based on the Y481 movement.
Parts List
| 35D05NN5 | crown |
| HK76A | band - leather band |
| 09SC27NG | others - second hand |
| 1AA060A1BAA | others - hour hand |
| 2AA090A1BAA | others - minute hand |
| 09P03AGM | others - minute hand |
| 0351486 | others - winding stem |
| A130BS | others - push pin |