The Seiko 2F70-031B is a watch model based on the 2F70 movement.
Parts List
| 160NA1SN01 | crystal |
| 25M63DX4 | crown |
| 0C165NA11 | case back gasket |
| WI250 | band - band |
| 06M39JGH | others - hour hand |
| 06M39JGM | others - minute hand |
| 06M39JSH | others - hour hand |
| 06M39JSM | others - minute hand |
| 06M39JSHC | others - hour hand |
| WI179 | others - other band |
| DZ0040B01 | others - crown and stem gasket |
| 0351357 | others - winding stem |
| 82802930 | others - case ring |