The Seiko V657-0020 is a watch model based on the V657 movement.
Parts List
| 300P31LN03 | crystal - crystal |
| 8M45B7BNG0 | crown - crown |
| 8M45B7SNW1 | crown - crown |
| 0G310BAA1 | case back gasket - case back gasket |
| 86620170 | crystal gasket - plastic gasket for crystal |
| AD006BAA1 | pusher - button gasket |
| 80633899 | pusher - button |
| 80633891 | pusher - button |
| 8E14ZZ | band - band |
| 8E15ZZ | band - band |
| 8DB9KZ | band - band |
| 8DB7JZ | band |
| 8DB0JZ | band - band |
| 8DB6KZ | band |
| 2AX115FNBFP | others - minute hand |
| 2AX115FNBFM | others - minute hand |
| 2AX115FNBFT | others - minute hand |
| 3BX037FBBAN | others - sub hand |
| 3BX037FBBAF | others - sub hand |
| 3BX037FBBAE | others - sub hand |
| 1AX080FPBFP | others - hour hand |
| 1AX080FPBFM | others - hour hand |
| 1AX080FPBFT | others - hour hand |
| V6570020RJF | others - case |
| 82430875 | others - bezel |
| V6570020RJG | others - case |
| T160BS | others - push pin |
| V6570020TBB | others - case |
| 82430876 | others - bezel |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BA11 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 81518099 | others - case back screw |
| 3BA125F1BF5 | others - second hand |
| 2AX115FNBFN | others - minute hand |
| 1AX080FPBFN | others - hour hand |