The Seiko 1E20-5610 is a watch model based on the 1E20 movement.
Parts List
| RE9N38JN01 | crystal - crystal (inorganic) |
| 30M68NA1 | crown - crown |
| 0H2520N01 | case back gasket - case back gasket |
| BMA08G | band - leather band |
| BMJ10G | band - leather band |
| WMA08C | band - leather band |
| WMJ07G | band - leather band |
| 05V08FGH | hand - hour hand |
| 05V08GGM | hand - minute hand |
| 1E201050X999 | others - dial |
| 1E201050XG19 | others - dial |
| 1E20561025 | others - case |
| 1E2056102N | others - case |
| 1E208 | others - machine code |
| 82800380 | others - case ring |
| A160BS | others - push pin |
| 0351931 | others - winding stem |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 05V08DGM | others - minute hand |
| 05V08NGH | others - hour hand |
Caliber 1E20
