The Seiko W650-4220 is a watch model based on the W650 movement.
Parts List
| K00P15L20A | crystal - crystal |
| K00P15L20D | crystal - crystal |
| K00P15L20E | crystal - crystal |
| 0F300BED1 | case back gasket - case back gasket |
| 86640250 | crystal gasket - plastic gasket for crystal |
| 80710270 | pusher - button |
| FE94AB | band - band |
| FE95AB | band - band |
| FEH0FZ | band - band |
| FEH1FZ | band - band |
| FEG9FZ | band - band |
| FEG8FZ | band - band |
| W650422074B | others - case |
| W6504220SHA | others - case |
| W6504220SHD | others - case |
| T160BS | others - push pin |
| W6504220SHB | others - case |
| W6504220SHC | others - case |
| W650422074A | others - case |
| AD006BA11 | others - crown and stem gasket |
| 81350760 | others - button spring (front) |
| 81518099 | others - case back screw |
| 81351639 | others - button spring |
| 83200211 | others - button spring clip |