The Seiko 3F31-0C00 is a watch model based on the 3F31 movement.
Parts List
| 185A12SB0A | crystal - crystal |
| 25M44NA4 | crown |
| 0F180NA1S | case back gasket - case back gasket |
| D063CB | band - band |
| 1AF050L4BDG | others - hour hand |
| 0354735 | others - winding stem |
| 82832280 | others - case ring |
| 3F310C00XB | others - case |
| 3F310C00 | others - case back |
| 3F310C00XBA | others - case |
| 3F310C30XS14 | others - dial |
| 3F311 | others - machine code |
| B090AS | others - push pin |
| 2AF075L2BDG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 08SC22D1 | others - second hand |