The Seiko 1E20-0680 is a watch model based on the 1E20 movement.
Parts List
| 130N24SK01 | crystal |
| 30MB0NA1 | crown - crown |
| 0H1200N01 | case back gasket |
| TT34A | band - metal band |
| TT35A | band - metal band |
| 05V40DGM | others - minute hand |
| 0351931 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82732560 | others - case ring |
| 1E200680 | others - case back |
| 1E20068026 | others - case |
| 1E2006802E | others - case |
| 1E202080XG14 | others - dial |
| 1E202080XS14 | others - dial |
| 1E208 | others - machine code |
| 05VA6DGH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
