The Seiko 1E20-5030 is a watch model based on the 1E20 movement.
Parts List
| RE5N10GM01 | crystal - crystal (inorganic) |
| 30M54NA1 | crown |
| 0H1200N01 | case back gasket |
| Z5092C | band - metal band |
| Z5092C-LKG | band - link |
| Z5092C-PB1 | clasp - parts for buckle/clasp |
| Z5092C-BK4S | clasp - buckle |
| 04V18DGH | others - hour hand |
| 04V18DGM | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82722120 | others - case ring |
| 1E200080XN14 | others - dial |
| 1E2050302N | others - case |
| 1E208 | others - machine code |
| 0351931 | others - winding stem |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 2CE040LMBDG | others - minute hand |
| 1CE027LMBDG | others - hour hand |
Caliber 1E20
