The Seiko 1E20-0450 is a watch model based on the 1E20 movement.
Parts List
| 105N00GN | crystal |
| 105N00GN00 | crystal - crystal |
| 30M68NA1 | crown - crown |
| 0H1000N01 | case back gasket - case back gasket |
| 0H1000N0 | case back gasket |
| DZ0041B0 | case back gasket |
| B5417G-LKG | band - link |
| B5417C | band - metal band |
| B5417C-LKG | band - link |
| B5417D | band - metal band |
| B5417D-LKG | band - link |
| B5417G | band - metal band |
| B5417G-BK4G | clasp - clasp |
| B5417D-BK4G | clasp - clasp |
| B5417C-BK4G | clasp - clasp |
| B5417G-PB1 | clasp - parts for buckle/clasp |
| 04V18DGH | others - hour hand |
| 04V18DGM | others - minute hand |
| 0351931 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82722960 | others - case ring |
| 1E200450 | others - case back |
| 1E20045025 | others - case |
| 1E2004502N | others - case |
| 1E201580XG14 | others - dial |
| 1E201580XG24 | others - dial |
| 1E201580XN14 | others - dial |
| 1E208 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
| 2CE040LMBDG | others - minute hand |
| 1CE027LMBDG | others - hour hand |
Caliber 1E20
