The Seiko 5Y31-7040 is a watch model based on the 5Y31 movement.
Parts List
| 280WB8SN01 | crystal |
| 35M82NA1 | crown - crown |
| 0A2600B01 | case back gasket |
| 11TD0FGH | others - hour hand |
| 0351670 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82802780 | others - case ring |
| 5Y317040 | others - case back |
| 5Y317040SF | others - case |
| 5Y317040V8 | others - case |
| 5Y317170XS14 | others - dial |
| 5Y317180XS14 | others - dial |
| 5Y317190XS14 | others - dial |
| 5Y319 | others - machine code |
| 11TD0FGM | others - minute hand |
| 11TD0NGH | others - hour hand |
| 0Z0060B01 | others - crown and stem gasket |
| 12SC35VG | others - second hand |
| 11TD0NGM | others - minute hand |