The Seiko 1E20-3140 is a watch model based on the 1E20 movement.
Parts List
| SA2A79SN02 | crystal - crystal |
| 25M45DX4 | crown - crown |
| 25M45DE4 | crown - crown |
| 0F130NA1S | case back gasket - case back gasket |
| XX000 | band - band |
| 2EA045A3BDS | others - minute hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351931 | others - winding stem |
| 82838150 | others - case ring |
| 1E2031406EA | others - case |
| 1E203140 | others - case back |
| 1E20314093A | others - case |
| 1E205350XA13 | others - dial |
| 1E205350XA14 | others - dial |
| 1E208 | others - machine code |
| 1CA030A3BNG | others - hour hand |
| 2EA045A3BDG | others - minute hand |
| 1CA030A3BNS | others - hour hand |
Caliber 1E20
