The Seiko 1E20-5500 is a watch model based on the 1E20 movement.
Parts List
| SADN18JN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1300N01 | case back gasket |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
Seiko 1E20-5500 Watch Guide
The Seiko 1E20-5500 is a watch model based on the 1E20 movement.
| SADN18JN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1300N01 | case back gasket |
| DZ0041B01 | others - crown and stem gasket |