The Seiko W441-4000 is a watch model based on the W441 movement.
Parts List
| SA0P57L20A | crystal - crystal |
| SA0P57L20B | crystal - crystal |
| SA0P57L20C | crystal - crystal |
| 0F255BEA1 | case back gasket - case back gasket |
| 86641110 | crystal gasket - plastic gasket for crystal |
| HC5Z01PAN0 | pusher - button |
| HC5Z01PAR0 | pusher - button |
| 81370139 | pusher - button spring (front) |
| H89Z01PMS0 | pusher - front button |
| FET2AB | band - band |
| FET3AB | band - band |
| FET4AB | band - band |
| FET5AB | band - band |
| FEV6AB | band - band |
| FEV5AB | band - band |
| W4414000N2F | others - case |
| T180BS | others - push pin |
| W4414000N2E | others - case |
| W4414000N2D | others - case |
| W4414000N2C | others - case |
| W4414000N2B | others - case |
| W4414000N2A | others - case |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |
| 81351999 | others - button spring |
| 81518099 | others - case back screw |
| 81352030 | others - button spring |
| 83200241 | others - button spring clip |