The Seiko 7771-6021 is a watch model based on the 7771 movement.
Parts List
| 265W25SN01 | crystal |
| 27M13DE5 | crown |
| 27M13DX5 | crown |
| 0F220BAA3 | case back gasket - case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 86582030 | crystal gasket |
| 0F220NAA3 | bezel gasket |
| 86582110 | bezel gasket |
| GK01P | band - leather band |
| GK02P | band - leather band |
| A170AS | others - push pin |
| 81505075 | others - case back screw |
| 81505076 | others - case back screw |
| 11SC25VG | others - second hand |
| 11S39JGH | others - hour hand |
| 11S39JGM | others - minute hand |
| 11S39JSH | others - hour hand |
| 11S39JSM | others - minute hand |