The Seiko 2E20-7139 is a watch model based on the 2E20 movement.
Parts List
| RE3A05J20A | crystal - crystal |
| RE3A05J20B | crystal - crystal |
| RE3A05J2 | crystal |
| 6M25Z1NNGB | crown |
| 6M25Z1NNGA | crown |
| 6M25Z1NN | crown |
| 0H1400B01 | case back gasket - case back gasket |
| 0H1400B0 | case back gasket |
| 2017BZ | band - band |
| 2017BZ-LKG | band - link |
| 2017BZ-BK4G | clasp - buckle |
| 2EE030LABDG | others - minute hand |
| 1CE020LABDG | others - hour hand |
| 0351207 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 81610199 | others - bracelet fixing pin |
| 2E207139FYA | others - case |
| 82843930 | others - case ring |
| 2E207139 | others - case back |
| 2E207139FYB | others - case |
| DZ0040B01 | others - crown and stem gasket |
| 0351206 | others - winding stem |
| 2E202640XL14 | others - dial |
| 2E202640XS14 | others - dial |
| 2E2062 | others - machine code |
Caliber 2E20
