The Seiko 5Y30-7B40 is a watch model based on the 5Y30 movement.
Parts List
| 280WC7JM01 | crystal |
| 280WC7JM | crystal |
| 30ME9NN1 | crown |
| 0F230BAA | case back gasket |
| 0F230BAA3 | case back gasket - case back gasket |
| WPJ82G | band |
| WPA57G | band |
| 0D005BA13 | others - crown and stem gasket |
| 0351671 | others - winding stem |
| 82732490 | others - case ring |
| 5Y3061 | others - machine code |
| 5Y307B40 | others - case back |
| 5Y307B4075 | others - case |
| 5Y307C30X914 | others - dial |
| 5Y307C30XB14 | others - dial |
| 5Y307C30XG14 | others - dial |
| A180BS | others - push pin |
| 10T25DGM | others - minute hand |
| 10T25DGH | others - hour hand |