The Seiko W851-402A is a watch model based on the W851 movement.
Parts List
| SA0P55L20A | crystal - crystal (inorganic) |
| 0F309BEA1 | case back gasket - case back gasket |
| 86641070 | crystal gasket - plastic gasket for crystal |
| 86641075 | crystal gasket - plastic gasket for crystal |
| 80711730 | pusher - button |
| 80711775 | pusher - front button |
| 80711770 | pusher - front button |
| 80711715 | pusher - button |
| 80711735 | pusher - button |
| 80711710 | pusher - button |
| DD89AB | band - band |
| DD90AB | band - band |
| WT73DB | band - leather band |
| 89925030 | band - other |
| 89925035 | band - other |
| 89925390 | band - other |
| 89925395 | band - other |
| 8992543E | band - other |
| 8992543F | band - other |
| DD91AB | band - band |
| 86510959 | others - conducting plate |
| 86511079 | others - conducting plate |
| T160BS | others - push pin |
| T280ES | others - push pin |
| W85110 | others - machine code |
| W85150 | others - machine code |
| 8992543A | others - air protector unit |
| W851402AN2C | others - case |
| W851402AN2B | others - case |
| W851402AN2A | others - case |
| W851402A | others - case back |
| 81351630 | others - button spring |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |
| 81351859 | others - button spring (front) |
| 81518259 | others - case back screw |
Other models with the same movement