The Seiko 1E20-6020 is a watch model based on the 1E20 movement.
Parts List
| ESJN24JM | crystal |
| ESJN24JM01 | crystal - crystal (inorganic) |
| 30M98NA1 | crown |
| 0H1300N01 | case back gasket |
| DZ0041B0 | case back gasket |
| 0H1300N0 | case back gasket |
| Z5256D | band - metal band |
| Z5256D-LKG | band - link |
| Z5256D-PB1 | clasp - parts for buckle/clasp |
| Z5256D-BK4G | clasp - clasp |
| T070AS | others - push pin |
| 0351931 | others - winding stem |
| 03V08DGH | others - hour hand |
| 1E201750XG24 | others - dial |
| 1E206020 | others - case back |
| 1E206020HE | others - case |
| 1E208 | others - machine code |
| 82801460 | others - case ring |
| 03V08DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
