The Seiko 1E20-3A79 is a watch model based on the 1E20 movement.
Parts List
| ES1A32JV0C | crystal - crystal |
| ES1A32JV | crystal |
| 30MK4NA4 | crown - crown |
| 0E150NA1S | case back gasket - case back gasket |
| EZ0035B0 | case back gasket |
| 2044YB-LKG | band - link |
| 2044YB | band - band |
| 2044YB-BK4G | clasp - buckle |
| 1CE025L2BDG | others - hour hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1E203A7926 | others - case |
| 82836880 | others - case ring |
| 1E203A79 | others - case back |
| 1E205A50XE14 | others - dial |
| 1E207 | others - machine code |
| 0351931 | others - winding stem |
| 04V23DGM | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1E20
