The Seiko 5E31-6E20 is a watch model based on the 5E31 movement.
Parts List
| 275W42SK01 | crystal |
| 40MF2NA1 | crown |
| FH2882B0A | case back gasket - case back gasket |
| 86564621 | crystal gasket |
| AB04C | band - metal band |
| 3AA125F0ANG | others - second hand |
| 0351624 | others - winding stem |
| 1BG080L2BCE | others - hour hand |
| 5E315 | others - machine code |
| 5E316E20 | others - case back |
| 5E316E206Y | others - case |
| 5E316E70XS14 | others - dial |
| 82832040 | others - case ring |
| 87020283 | others - back plate |
| A170BS | others - push pin |
| 2BG120L0BCE | others - minute hand |
| EA0040B0A | others - crown and stem gasket |