The Seiko 1E20-0C30 is a watch model based on the 1E20 movement.
Parts List
| 125N05JN01 | crystal |
| 25N09NA1 | crown |
| 25N09NS1 | crown |
| 0D125BA11 | case back gasket |
| RG03A | band - metal band |
| RG04A | band - metal band |
| 2EA045A3BDS | others - minute hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 82813810 | others - case ring |
| 81609439 | others - bracelet fixing pin |
| 1E200C20XG14 | others - dial |
| 1E200C20XS13 | others - dial |
| 1E200C3025 | others - case |
| 1E200C302E | others - case |
| 1E208 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351931 | others - winding stem |
| 05L17NGH | others - hour hand |
| 05L17NSH | others - hour hand |
| 1CA030A3BNG | others - hour hand |
| 2EA045A3BDG | others - minute hand |
| 05V13DGM | others - minute hand |
| 05V13DSM | others - minute hand |
| 1CA030A3BNS | others - hour hand |
Caliber 1E20
