The Seiko 5Y30-7A90 is a watch model based on the 5Y30 movement.
Parts List
| 280WB1JM01 | crystal |
| 280WB1JM | crystal |
| 32M01NN1 | crown |
| 0F230BAA | case back gasket |
| 0F230BAA3 | case back gasket - case back gasket |
| B1656H | band |
| B1656H-LKG | band - link |
| B1656H-BK4G | clasp - clasp |
| 12T21DGH | hand - hour hand |
| 12T21DGM | hand - minute hand |
| 5Y307A90 | others - case back |
| 5Y307A90WE | others - case |
| 5Y307B40XG14 | others - dial |
| A160BS | others - push pin |
| 82732490 | others - case ring |
| EB0055B01 | others - crown and stem gasket |
| 0351671 | others - winding stem |
| 11T39DGH | others - hour hand |
| 11T39DGM | others - minute hand |