The Seiko 1E20-5A7A is a watch model based on the 1E20 movement.
Parts List
| ET7N15SV01 | crystal |
| 25M25DA5 | crown - crown (3h) |
| 0G1600B01 | case back gasket - case back gasket |
| HZ54A | band - metal band |
| 05L29JCH | others - hour hand |
| 0351931 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 1E200D40XS14 | others - dial |
| 1E205A7A26A | others - case |
| 82833550 | others - case ring |
| A120AS | others - push pin |
| 05V29JGM | others - minute hand |
Caliber 1E20
