The Seiko 5E31-6B8A is a watch model based on the 5E31 movement.
Parts List
| 245W10SV01 | crystal |
| 35MF0NA1 | crown |
| 0A2400N0A | case back gasket |
| 86580500 | crystal gasket - plastic gasket for crystal |
| GB18B | band - metal band |
| 12ST06DA | others - second hand |
| 0351624 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82831160 | others - case ring |
| 5E315 | others - machine code |
| 5E316B80XG14 | others - dial |
| 5E316B8A | others - case back |
| 5E316B8ASA | others - case |
| 87020283 | others - back plate |
| 1BA075A0BNG | others - hour hand |
| EA0040B0A | others - crown and stem gasket |
| 2BA105A0BDG | others - minute hand |