The Seiko 7770-6040 is a watch model based on the 7770 movement.
Parts List
| 250W25SN01 | crystal |
| 25M13NS5 | crown - crown |
| AC004BA11 | case back gasket - crown and stem gasket |
| 86582150 | crystal gasket |
| 0F220NAA3 | bezel gasket |
| QB21A | band - metal band |
| 10S21CGH | others - hour hand |
| A180AS | others - push pin |
| 10S21CGM | others - minute hand |