The Seiko 1E20-6340 is a watch model based on the 1E20 movement.
Parts List
| K04N36JN01 | crystal |
| 30MF8NA1 | crown - crown |
| 0F120BA12 | case back gasket |
| TT51A | band - metal band |
| TT52A | band - metal band |
| 03V22AGH | others - hour hand |
| 0351931 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609499 | others - bracelet fixing pin |
| 1E202270XS19 | others - dial |
| 1E202280XS19 | others - dial |
| 1E206340 | others - case back |
| 1E20634075 | others - case |
| 1E2063407N | others - case |
| 1E208 | others - machine code |
| 82724520 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 03V22AGM | others - minute hand |
| 03V22NGH | others - hour hand |
| 03V22NGM | others - minute hand |
Caliber 1E20
