The Seiko 1E20-5370 is a watch model based on the 1E20 movement.
Parts List
| ESDN28GM02 | crystal |
| 30M86NS1 | crown |
| 0H1970N01 | case back gasket - case back gasket |
| DK57B | band - leather band |
| 05V18NGH | others - hour hand |
| 81180229 | others - bracelet fixing pipe |
| 81604219 | others - bracelet fixing pin |
| 1E200690XS19 | others - dial |
| 1E2053702E | others - case |
| 1E208 | others - machine code |
| 82732100 | others - case ring |
| A180AS | others - push pin |
| 0354930 | others - winding stem |
| 05V18NGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
