The Seiko 1E20-5660 is a watch model based on the 1E20 movement.
Parts List
| REAN08JN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1300N01 | case back gasket |
| BDA10G | band |
| BDJ05G | band - leather band |
| 04V22DGH | others - hour hand |
| 04V22DGM | others - minute hand |
| T080AS | others - push pin |
| 1E201110XG24 | others - dial |
| 1E201110XN14 | others - dial |
| 1E20566025 | others - case |
| 1E208 | others - machine code |
| 82801280 | others - case ring |
| 0351931 | others - winding stem |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
