The Seiko 1E20-5679 is a watch model based on the 1E20 movement.
Parts List
| K02N36JN | crystal |
| K02N36JN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1200N01 | case back gasket |
| 0H1200N0 | case back gasket |
| DZ0041B0 | case back gasket |
| WDJ03G | band - leather band |
| 0351931 | others - winding stem |
| 1E201130XG14 | others - dial |
| 1E205679 | others - case back |
| 1E20567925 | others - case |
| 1E208 | others - machine code |
| 82801300 | others - case ring |
| T080AS | others - push pin |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 04V04DGM | others - minute hand |
| 04V04NGH | others - hour hand |
Caliber 1E20
