The Seiko 1E20-3C30 is a watch model based on the 1E20 movement.
Parts List
| BA1A38JR02 | crystal - crystal |
| 30MF8NG1 | crown - crown |
| 0E130NA1S | case back gasket |
| 44P4LB | band - band |
| 44P4KB | band - band |
| 44P4KB-LK3 | band - link |
| 44P4LB-LK3 | band - link |
| 44P4KB-BKI | clasp - buckle |
| 44P4LB-BKI | clasp - buckle |
| 04VC2NGM | others - minute hand |
| 04V06NGH | others - hour hand |
| 04V42NGM | others - minute hand |
| 04V42NGH | others - hour hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1E203C3025Z | others - case |
| 82838480 | others - case ring |
| 1E203C30 | others - case back |
| 0351931 | others - winding stem |
| 1E205B98XG14 | others - dial |
| 1E205B98XS24 | others - dial |
| 1E205B98XS34 | others - dial |
| 1E205C08XS19 | others - dial |
| 1E207 | others - machine code |
| 1E203C302HZ | others - case |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1E20
