The Seiko W855-4000 is a watch model based on the W855 movement.
Parts List
| SA0P63L20A | crystal - crystal |
| SA0P63L20B | crystal - crystal |
| SA0P63L20C | crystal - crystal |
| 0F260BA1S | case back gasket - case back gasket |
| 86641130 | crystal gasket - plastic gasket for crystal |
| FEW6AB | band - band |
| FEW7AB | band - band |
| FEW8AB | band - band |
| W8554000ZNA | others - case |
| W8554000ZNB | others - case |
| W8554000ZNC | others - case |
Other models with the same movement
| W855-4020 |