The Seiko 1E20-3090 is a watch model based on the 1E20 movement.
Parts List
| 30MA3DAA | crown - crown |
| 30MA3DTA | crown - crown |
| 0F120BA1S | case back gasket - case back gasket |
| WJ47BW | band - band |
| WJ48AW | band - band |
| 1CA030A1BNS | others - hour hand |
| 2EA047A1BNS | others - minute hand |
| 1CA030A1BNG | others - hour hand |
| A120BS | others - push pin (for lb) |
| 1E205310XA13 | others - dial |
| 1E205310XA14 | others - dial |
| 1E208 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351931 | others - winding stem |
| 1E2030908WA | others - case |
| 82837510 | others - case ring |
| 1E203090 | others - case back |
| 1E2030908XA | others - case |
Caliber 1E20
