The Seiko 7779-603B is a watch model based on the 7779 movement.
Parts List
| 240W31SN01 | crystal |
| 28M01EE1 | crown |
| 0F230EA31 | case back gasket |
| 86591050 | crystal gasket |
| VI109 | others - other band |
| 81505415 | others - case back screw |
Other models with the same movement
| 7779-6000 |
| 7779-6001 |
| 7779-6010 |
| 7779-6020 |
| 7779-602A |
| 7779-6030 |
| 7779-603A |