The Seiko 1E20-5690 is a watch model based on the 1E20 movement.
Parts List
| ESGN12JN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1300N01 | case back gasket |
| B5365C | band - metal band |
| B5365G | band - metal band |
| B5365C-BK3G | clasp - clasp |
| B5365G-BK3G | clasp - clasp |
| B5365G-EP2 | others - endpiece |
| B5365C-EP2 | others - endpiece |
| 03V06NGH | others - hour hand |
| 0351931 | others - winding stem |
| 1E201660XG14 | others - dial |
| 1E201660XN14 | others - dial |
| 1E20569025 | others - case |
| 1E205690EA | others - case |
| 1E208 | others - machine code |
| 82801280 | others - case ring |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 03V20DGM | others - minute hand |
Caliber 1E20
