The Seiko W440-4000 is a watch model based on the W440 movement.
Parts List
| RE0P15L20A | crystal |
| RE0P15L20B | crystal |
| RE0P15L20C | crystal |
| 0F255BEA1 | case back gasket - case back gasket |
| 86640670 | crystal gasket - plastic gasket for crystal |
| 81370139 | pusher - button spring (front) |
| H89Z01PMS0 | pusher - front button |
| HA5Z01PAB0 | pusher - button |
| FEC0AZ | band - band |
| F1A0FZ | band - metal band |
| FEC3AZ | band - band |
| FEC4AZ | band - band |
| FEC1AZ | band - band |
| F1A1AZ | band - metal band |
| FEC2AZ | band - band |
| A170BS | others - push pin |
| W4404000RJB | others - case |
| W4404000RJA | others - case |
| W440400074C | others - case |
| W440400074B | others - case |
| W440400074A | others - case |
| 81350760 | others - button spring (front) |
| 81351999 | others - button spring |
| 81518099 | others - case back screw |
| 83200273 | others - button spring clip |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |
| 81352030 | others - button spring |
| 83200241 | others - button spring clip |
Other models with the same movement