The Seiko 5Y30-5D40 is a watch model based on the 5Y30 movement.
Parts List
| REKN09JM01 | crystal |
| REKN09JM | crystal |
| 30ND1NN1 | crown |
| 0H2800B01 | case back gasket - rotating bezel gasket |
| 0H2800B0 | case back gasket |
| 0H2820B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| G1369G | band |
| G1369S | band |
| G1369G-BK5G | clasp - clasp |
| 1BE055LABDG | others - hour hand |
| 1BA060A1BNG | others - hour hand |
| 08T01DGM | others - minute hand |
| 0351671 | others - winding stem |
| 5Y305D4025 | others - case |
| 5Y305D4029 | others - case |
| 5Y305G70XB14 | others - dial |
| 5Y305G70XG14 | others - dial |
| 5Y305G80XG14 | others - dial |
| 5Y305G80XN14 | others - dial |
| 82830350 | others - case ring |
| A180BS | others - push pin |
| 09T13NGH | others - hour hand |
| 09T13NGM | others - minute hand |
| 2BE085LABDG | others - minute hand |
| 08T01DGH | others - hour hand |
| 2BA090A1BNG | others - minute hand |