The Seiko 1E20-0310 is a watch model based on the 1E20 movement.
Parts List
| 100N04GN00 | crystal |
| 30M54NA1 | crown |
| 30M54NS1 | crown - crown |
| 0H1000N01 | case back gasket - case back gasket |
| 03V06NSM | others - minute hand |
| 82722960 | others - case ring |
| 1E20031025 | others - case |
| 1E2003102E | others - case |
| 1E200850XG14 | others - dial |
| 1E200850XS13 | others - dial |
| 1E208 | others - machine code |
| 03V06NGH | others - hour hand |
| 0351931 | others - winding stem |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 04V01DSM | others - minute hand |
| 04V03DGM | others - minute hand |
Caliber 1E20
