The Seiko 1E20-5340 is a watch model based on the 1E20 movement.
Parts List
| RE7N34GN00 | crystal |
| RE7N34GN | crystal |
| 30M54NS1 | crown - crown |
| 0H1400N01 | case back gasket - case back gasket |
| 0H1400N0 | case back gasket |
| BZA05S | band |
| 04V04NSH | others - hour hand |
| 0351931 | others - winding stem |
| 82722860 | others - case ring |
| 1E200660XN13 | others - dial |
| 1E20534011 | others - case |
| 1E208 | others - machine code |
| A320CS | others - push pin |
| 0354930 | others - winding stem |
| 04V04DSM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
