The Seiko W650-4070 is a watch model based on the W650 movement.
Parts List
| SA0P15L20A | crystal - crystal |
| SA0P15L20B | crystal - crystal |
| SA0P15L20C | crystal - crystal |
| SA0P15L20D | crystal - crystal |
| 0F300BED1 | case back gasket - case back gasket |
| 86640030 | crystal gasket - plastic gasket for crystal |
| 86640330 | crystal gasket - plastic gasket for crystal |
| 80633110 | pusher - button |
| HC6Z01PMS0 | pusher - button |
| FCV6FZ | band - band |
| FCV7FZ | band - band |
| FD20FZ | band - leather band |
| WM56DZ | band - band |
| FD19FZ | band - leather band |
| WM57DZ | band - band |
| FEG7FZ | band - band |
| W6504070SLE | others - case |
| W6504070 | others - case back |
| T160BS | others - push pin |
| W6504070SLD | others - case |
| W6504070SLB | others - case |
| W6504070SLC | others - case |
| W6504070SLA | others - case |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |
| 81350760 | others - button spring (front) |
| 81518099 | others - case back screw |
| 81351639 | others - button spring |
| 83200211 | others - button spring clip |