The Seiko 1E20-0240 is a watch model based on the 1E20 movement.
Parts List
| 220N04GM01 | crystal |
| 30M88NH1 | crown |
| 0H1610N01 | case back gasket |
| 86573000 | crystal gasket - plastic gasket for crystal |
| 86573020 | bezel gasket |
| DK56B | band - leather band |
| 06V34NRM | others - minute hand |
| 0354931 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81602889 | others - bracelet fixing pin |
| 1E2002401B | others - case |
| 1E200680XB19 | others - dial |
| 1E203 | others - machine code |
| 82311903 | others - bezel |
| 82732120 | others - case ring |
| 06V44NRH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
