The Seiko 2E20-5640 is a watch model based on the 2E20 movement.
Parts List
| REFN01JV01 | crystal |
| 30N63NA1 | crown - crown |
| 0F140NA11 | case back gasket |
| DZ55A | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 81609619 | others - bracelet fixing pin |
| 2E200810XS14 | others - dial |
| 2E2056402H | others - case |
| 82800730 | others - case ring |
| 0351205 | others - winding stem |
| 1CA025A3BNG | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 2EA035A3BDG | others - minute hand |
| 04L03DGH | others - hour hand |
| 1CA022A3BNG | others - hour hand |
| 04V03DGM | others - minute hand |
Caliber 2E20
