The Seiko W854-4020 is a watch model based on the W854 movement.
Parts List
| ES0P73L30A | crystal - crystal |
| ES0P73L30B | crystal - crystal |
| ES0P73L30C | crystal - crystal |
| 0G309BE11 | case back gasket - case back gasket |
| 86641090 | crystal gasket - plastic gasket for crystal |
| A30A15SMS0 | pusher - button |
| D60Z03PMS1 | pusher - front button |
| 7C92WB | band - band |
| 7C93WB | band - band |
| 7C97WB | band - band |
| 7C98WB | band - rubber band |
| A110BS | others - push pin (for mb) |
| 81402839 | others - washer |
| 86510959 | others - conducting plate |
| 86511079 | others - conducting plate |
| W85453 | others - machine code |
| W8544020N2B | others - case |
| 85262170 | others - decorative bezel |
| W8544020N2C | others - case |
| 85262175 | others - decorative bezel |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |
| 81350760 | others - button spring (front) |
| 81351999 | others - button spring |
| 81514639 | others - case back screw |
| W8544020N2A | others - case |
| 82432330 | others - decorative bezel |
| 85262176 | others - decorative bezel |
| 81514735 | others - decorative bezel fixing screw |
Other models with the same movement