The Seiko 2E20-5850 is a watch model based on the 2E20 movement.
Parts List
| ET2N29JN01 | crystal |
| ET2N29JN | crystal |
| 32N23NA1 | crown |
| 0F130NA1 | case back gasket |
| 0F130NA11 | case back gasket |
| DA007BA1 | case back gasket |
| Q5021G | band - metal band |
| Q5021G-BK3G | clasp - clasp |
| 2EA037A3BDG | hand - minute hand |
| 2EG037LBBDG | others - minute hand |
| 04L09DGH | others - hour hand |
| 04V11DGM | others - minute hand |
| 1CG022LABDG | others - hour hand |
| DA007BA11 | others - crown and stem gasket |
| 2E201070XG14 | others - dial |
| 2E201070XL14 | others - dial |
| 2E201080X994 | others - dial |
| 2E201080XR14 | others - dial |
| 2E205850 | others - case back |
| 2E20585025 | others - case |
| 82810450 | others - case ring |
| T060AS | others - push pin |
| 2EA035A3BDG | others - minute hand |
| 1CA022A3BNG | others - hour hand |
| 04V03DGM | others - minute hand |
| ET2N29JN01 | crystal |
| ET2N29JN | crystal |
| 32N23NA1 | crown |
| 0F130NA1 | case back gasket |
| 0F130NA11 | case back gasket |
| DA007BA1 | case back gasket |
| Q5021G | band - metal band |
| Q5021G-BK3G | clasp - clasp |
| 2EA037A3BDG | hand - minute hand |
| 2EG037LBBDG | others - minute hand |
| 04L09DGH | others - hour hand |
| 04V11DGM | others - minute hand |
| 1CG022LABDG | others - hour hand |
| DA007BA11 | others - crown and stem gasket |
| 2E201070XG14 | others - dial |
| 2E201070XL14 | others - dial |
| 2E201080X994 | others - dial |
| 2E201080XR14 | others - dial |
| 2E205850 | others - case back |
| 2E20585025 | others - case |
| 82810450 | others - case ring |
| T060AS | others - push pin |
| 2EA035A3BDG | others - minute hand |
| 1CA022A3BNG | others - hour hand |
| 04V03DGM | others - minute hand |
Caliber 2E20
