The Seiko V851-6440 is a watch model based on the V851 movement.
Parts List
| 270P02LN03 | crystal - crystal |
| 8M45A1SNW0 | crown - crown |
| 0F310BAA1 | case back gasket - case back gasket |
| 86592530 | crystal gasket |
| 86562215 | bezel gasket - plastic gasket for crystal |
| 8BS5JZ | band |
| DE010BAA1 | others - crown and stem gasket |
| 0354133 | others - winding stem |
| 3HX115F5BAJ | others - second hand |
| 2HH100FABFK | others - minute hand |
| 1HH070FABFK | others - hour hand |