The Seiko 7771-5050 is a watch model based on the 7771 movement.
Parts List
| ESEW19SN01 | crystal |
| 25M45DZ4 | crown |
| 0F240NAA3 | case back gasket |
| LK14P | band - leather band |
| A180BS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 10S21CGH | others - hour hand |
| 10S21CGM | others - minute hand |
| 11SC33VG | others - second hand |