The Seiko 5P31-5D80 is a watch model based on the 5P31 movement.
Parts List
| SAAW40SN01 | crystal - crystal |
| 35MA8NA1 | crown |
| 0A2500N01 | case back gasket - rotating bezel gasket |
| GL62A | band - band |
| GL54A | band - leather band |
| 09T04A1M | others - minute hand |
| 09T04A1H | others - hour hand |
| 09T04N1H | others - hour hand |
| 09T04N1M | others - minute hand |
| 0351670 | others - winding stem |
| 5P315D8075 | others - case |
| 82812980 | others - case ring |
| 5P315D80 | others - case back |
| 5P315F10XG14 | others - dial |
| 5P315F20XS19 | others - dial |
| 5P319 | others - machine code |
| A160BS | others - push pin |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |