The Seiko 5E31-6C20 is a watch model based on the 5E31 movement.
Parts List
| 265W24SN01 | crystal |
| 25M20NA3 | crown |
| 0A2500N01 | case back gasket - rotating bezel gasket |
| DAB1BW | band - band |
| AK45D | band - leather band |
| 1BB075L0BCC | others - hour hand |
| 2BB115L2BCC | others - minute hand |
| 12ST08CG | others - second hand |
| 0351624 | others - winding stem |
| 82812540 | others - case ring |
| 5E316C2075 | others - case |
| 5E316C20 | others - case back |
| 5E315 | others - machine code |
| 5E316C30XG14 | others - dial |
| 87020283 | others - back plate |
| A160AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |