The Seiko 1E20-0100 is a watch model based on the 1E20 movement.
Parts List
| 105N00GN00 | crystal - crystal |
| 30M54NA1 | crown |
| 0H1000N01 | case back gasket - case back gasket |
| KZ04A | band - band |
| KZ05A | band - band |
| 04V18DGH | others - hour hand |
| 04V18DGM | others - minute hand |
| 0351931 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 82722960 | others - case ring |
| 1E20010025 | others - case |
| 81604259 | others - bracelet fixing pin |
| 1E200300XB14 | others - dial |
| 1E200300XY14 | others - dial |
| 1E208 | others - machine code |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 105N00GN00 | crystal - crystal |
| 30M54NA1 | crown |
| 0H1000N01 | case back gasket - case back gasket |
| KZ04A | band - band |
| KZ05A | band - band |
| 04V18DGH | others - hour hand |
| 04V18DGM | others - minute hand |
| 0351931 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 82722960 | others - case ring |
| 1E20010025 | others - case |
| 81604259 | others - bracelet fixing pin |
| 1E200300XB14 | others - dial |
| 1E200300XY14 | others - dial |
| 1E208 | others - machine code |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
