The Seiko VX51-K999 is a watch model based on the VX51 movement.
Parts List
| FCWK991-PKB | case back gasket - gasket |
| FCWK996-PKB | case back gasket - gasket |
| FCWK997-PKB | case back gasket - gasket |
| FCWK998-PKB | case back gasket - gasket |
| FCWK999-PKB | case back gasket - gasket |
| KN503X | band - leather band |
| KN504X | band - leather band |
| KN506X | band - leather band |
| KN998X | band - metal band |
| KN999X | band - metal band |
| XSB3158L | others - push pin |