The Seiko 1E20-5110 is a watch model based on the 1E20 movement.
Parts List
| WA0N08GN00 | crystal - crystal |
| 30M68NA1 | crown - crown |
| 30M68NS1 | crown |
| 0H1300N01 | case back gasket |
| TT10A | band - band |
| TT11A | band - metal band |
| 03V10DGH | others - hour hand |
| 03V10DGM | others - minute hand |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 1E20511025 | others - case |
| 82723360 | others - case ring |
| 1E200260XG14 | others - dial |
| 1E200260XS13 | others - dial |
| 1E2051102E | others - case |
| 1E208 | others - machine code |
| 03V10D2H | others - hour hand |
| 0351931 | others - winding stem |
| 0354930 | others - winding stem |
| 03V10D2M | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
