The Seiko 1E20-0040 is a watch model based on the 1E20 movement.
Parts List
| 100N02JK01 | crystal - crystal |
| 30M54NA1 | crown |
| 0H1000N01 | case back gasket - case back gasket |
| DK27B | band - band |
| 04V16DGM | others - minute hand |
| 82720980 | others - case ring |
| 1E20004025 | others - case |
| 1E200060XG14 | others - dial |
| 1E208 | others - machine code |
| 03V06NGH | others - hour hand |
| 0351931 | others - winding stem |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
