The Seiko 5E31-5B80 is a watch model based on the 5E31 movement.
Parts List
| SA0A46SN01 | crystal |
| 30ML8TA4 | crown |
| 0F260NA1S | case back gasket - case back gasket |
| CA04BW | band - leather band |
| 5E315 | others - machine code |
| 5E315B80 | others - case back |
| 5E315B8076 | others - case |
| 5E315C20XG14 | others - dial |
| 82835480 | others - case ring |
| 87020283 | others - back plate |
| A180AS | others - push pin |
| 0351624 | others - winding stem |
| 12ST12TE | others - second hand |
| 1BA070A0BAD | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
| 2BA105A1BCF | others - minute hand |