The Seiko 5E31-5B40 is a watch model based on the 5E31 movement.
Parts List
| SACW44SB01 | crystal - crystal |
| 30ML0NJ4 | crown - crown |
| 0A2500N01 | case back gasket - rotating bezel gasket |
| 0F250NA1S | case back gasket |
| 86582300 | crystal gasket - plastic gasket for crystal |
| DA29AW | band - band |
| 10ST08DS | others - second hand |
| 1BA065A0BAE | others - hour hand |
| 2BA100A0BCE | others - minute hand |
| 0351624 | others - winding stem |
| 5E315B4071A | others - case |
| 82831840 | others - case ring |
| 5E315B40 | others - case back |
| 5E315B4071B | others - case |
| 5E315B4071C | others - case |
| 5E315 | others - machine code |
| 5E315B4071 | others - case |
| 5E315B80XS13 | others - dial |
| 87020283 | others - back plate |
| A170BS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |