The Seiko V401-0850 is a watch model based on the V401 movement.
Parts List
| 185A02JN02 | crystal - crystal (inorganic) |
| 6M35B3SNW0 | crown - crown |
| 6M35B3NNG1 | crown |
| 0F150BA1S | case back gasket - case back gasket |
| E003AZ | band - band |
| E004AZ | band - band |
| E003DZ | band - metal band |
| 3BA075F1BNG | others - second hand |
| 3BA075F1BNS | others - second hand |
| 2AA070A5BNG | others - minute hand |
| 2AA070A5BNS | others - minute hand |
| 1AA050A5BNS | others - hour hand |
| V40108507EA | others - case |
| 82828270 | others - case ring |
| V4010850 | others - case back |
| V40108507EB | others - case |
| V401085075A | others - case |
| V40110 | others - machine code |
| V4012180XS19 | others - dial |
| V4012180XS29 | others - dial |
| V4012190XS19 | others - dial |
| 0351155 | others - winding stem |
| 1AA050A5BNG | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |