The Seiko 1E20-535A is a watch model based on the 1E20 movement.
Parts List
| RE7N34GN00 | crystal |
| RE7N34SN01 | crystal |
| 30M54NA1 | crown |
| 30M54NS1 | crown - crown |
| 30M68EE1 | crown - crown |
| 0H1400N01 | case back gasket - case back gasket |
| DS47A | band - metal band |
| DK12C | band - leather band |
| DK13C | band - leather band |
| MK20C | band - leather band |
| MK21C | band - leather band |
| DS48A | band - metal band |
| 04V04NSH | others - hour hand |
| 82722860 | others - case ring |
| 1E201410XG14 | others - dial |
| 1E201410XN13 | others - dial |
| 1E201410XS14 | others - dial |
| 1E20535A11 | others - case |
| 1E20535A25 | others - case |
| 1E20535A43 | others - case |
| 1E208 | others - machine code |
| A220CS | others - push pin |
| 04V04DSM | others - minute hand |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 04V04DGM | others - minute hand |
| 04V04NGH | others - hour hand |
Caliber 1E20
