The Seiko 1E20-3020 is a watch model based on the 1E20 movement.
Parts List
| K05N73SN00 | crystal |
| 25M69DE1 | crown |
| 0H1300B01 | case back gasket |
| XI000 | band - band |
| 04L23JCH | others - hour hand |
| 04V33JGM | others - minute hand |
| 1E20302043 | others - case |
| 82850830 | others - case ring |
| 1E203020 | others - case back |
| 1E203 | others - machine code |
| 1E205030XS14 | others - dial |
| DZ0040B01 | others - crown and stem gasket |
Caliber 1E20
