The Seiko 1E20-0660 is a watch model based on the 1E20 movement.
Parts List
| 100N04GN00 | crystal |
| 30M98NA1 | crown |
| 30M98NS1 | crown - crown |
| 0H1000N01 | case back gasket - case back gasket |
| 0351931 | others - winding stem |
| 03V20NGM | others - minute hand |
| 82722960 | others - case ring |
| 1E200660 | others - case back |
| 1E20066011 | others - case |
| 1E20066025 | others - case |
| 1E202050XG14 | others - dial |
| 1E202050XN13 | others - dial |
| 1E208 | others - machine code |
| 03V20NSM | others - minute hand |
| 04V10NAH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
| 04V10NSH | others - hour hand |
Caliber 1E20
