The Seiko 2E20-5820 is a watch model based on the 2E20 movement.
Parts List
| K05N93SN01 | crystal |
| K05N93HN01 | crystal |
| K05N93SN | crystal |
| K05N93HN | crystal |
| 30M51NA1 | crown - crown |
| 0F130NA1 | case back gasket |
| 0F130NA11 | case back gasket |
| 04L09DGH | others - hour hand |
| 04V11DGM | others - minute hand |
| 1CG022LABDG | others - hour hand |
| 2EG037LBBDG | others - minute hand |
| 0351206 | others - winding stem |
| DA007BA11 | others - crown and stem gasket |
| 2E201040XG14 | others - dial |
| 2E20582043 | others - case |
| 2E20582043C | others - case |
| 2E205820GR | others - case |
| 2E2061 | others - machine code |
| 82803030 | others - case ring |
| T070AS | others - push pin |
Caliber 2E20
