The Seiko 1E20-0D90 is a watch model based on the 1E20 movement.
Parts List
| 110A01SN02 | crystal |
| 25M69NS1 | crown - crown |
| 0H1000B01 | case back gasket |
| HZ59A | band - metal band |
| HZ60A | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 82811270 | others - case ring |
| 81607039 | others - bracelet fixing pin |
| 1E200D90 | others - case back |
| 1E200D904C | others - case |
| 1E200E10XS14 | others - dial |
| 1E200E10XS24 | others - dial |
| 1E208 | others - machine code |
| 1CA025A3BNG | others - hour hand |
| 04L15DGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351931 | others - winding stem |
| 04V23DGM | others - minute hand |
| 2EA035A3BDG | others - minute hand |
| 1CE025LABDG | others - hour hand |
| 2EE037LCBDG | others - minute hand |
| 1CA022A3BNG | others - hour hand |
| 04V03DGM | others - minute hand |
Caliber 1E20
