The Seiko 1E20-2180 is a watch model based on the 1E20 movement.
Parts List
| 6M30B5SNW0 | crown - crown |
| 0E125BA11 | case back gasket - case back gasket |
| W139BB | band - band |
| 2EA040A1BNG | others - minute hand |
| 1CA030A1BNG | others - hour hand |
| 82731250 | others - case ring |
| DZ0040B01 | others - crown and stem gasket |
| 0351931 | others - winding stem |
| 1E2021802HA | others - case |
| 1E205330XG14 | others - dial |
| 1E208 | others - machine code |
Caliber 1E20
