The Seiko W650-4A00 is a watch model based on the W650 movement.
Parts List
| ES0P26LZ0B | crystal - crystal |
| ES0P26LZ0C | crystal - crystal |
| 0F300BED1 | case back gasket - case back gasket |
| 86579720 | crystal gasket - plastic gasket for crystal |
| 80633110 | pusher - button |
| 8060834D | pusher - button |
| 8063311A | pusher - button |
| 8060832A | pusher - front button |
| 8060832B | pusher - front button |
| 8060832C | pusher - front button |
| 8060832D | pusher - front button |
| 8060834C | pusher - button (8h) |
| 80633117 | pusher - button |
| 8060834B | pusher - button (8h) |
| 80633118 | pusher - button |
| 8060834A | pusher - button (8h) |
| FDS7AB | band - band |
| FDS5AB | band - band |
| FDS6AB | band - band |
| FDY5AB | band - band |
| W6504A00N2W | others - case |
| AD006BA11 | others - crown and stem gasket |
| 81518099 | others - case back screw |
| 81351639 | others - button spring |
| W6504A00N2Z | others - case |
| 86510839 | others - conducting plate |
| T180BS | others - push pin |
| W6504A00N2Y | others - case |
| W6504A00N2X | others - case |
| 81350700 | others - button spring (front) |
| 83200211 | others - button spring clip |