The Seiko 7771-5040 is a watch model based on the 7771 movement.
Parts List
| ES4N81SN00 | crystal - crystal |
| 27N01NS5 | crown - crown |
| 0H2700N01 | case back gasket |
| AI006 | band - band |
| 11SC25VS | others - second hand |
| 11S09VSH | others - hour hand |
| 11S09VSM | others - minute hand |
| 82813590 | others - case ring |
| DZ0040B01 | others - crown and stem gasket |
| 7771504011A | others - case |
| 0354371 | others - winding stem |