The Seiko 5Y30-7A81 is a watch model based on the 5Y30 movement.
Parts List
| 280WB1JM01 | crystal |
| 280WB1JM | crystal |
| 30ME9NN1 | crown |
| 0F230BAA | case back gasket |
| 0F230BAA3 | case back gasket - case back gasket |
| B1659J | band |
| 1BC080A1BAA | others - hour hand |
| 0351671 | others - winding stem |
| 0D005BA13 | others - crown and stem gasket |
| 11T05AFH | others - hour hand |
| 2BC110A1BCA | others - minute hand |
| 11T05CGM | others - minute hand |