The Seiko 2E20-5120 is a watch model based on the 2E20 movement.
Parts List
| ESTN11JE10 | crystal |
| 32N23NS1 | crown |
| 32N23NA1 | crown |
| 0H1450B01 | case back gasket - case back gasket |
| 0H1400B01 | case back gasket - case back gasket |
| B5181C | band - metal band |
| B5181C-BK3G | clasp - clasp |
| 04L09DGH | others - hour hand |
| 04V11DGM | others - minute hand |
| 1CG022LABDG | others - hour hand |
| 2EG037LBBDG | others - minute hand |
| 2E200200XN14 | others - dial |
| 2E2051202H | others - case |
| 82714130 | others - case ring |
| B5181C-EP2 | others - endpiece |
Caliber 2E20
