The Seiko 7731-5070 is a watch model based on the 7731 movement.
Parts List
| ESKN63SE10 | crystal - crystal |
| 30N59DA5 | crown - crown |
| 0H2300B01 | case back gasket |
| YK69A | band - band |
| 773150701LA | others - case |
| 82701790 | others - case ring |
| 77315070XG14 | others - dial |
| 773162 | others - machine code |
| A180AS | others - push pin |
| 0354371 | others - winding stem |
| 09P27DGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 09P27DGM | others - minute hand |
| 09SC25VG | others - second hand |