The Seiko 1E20-0B10 is a watch model based on the 1E20 movement.
Parts List
| 135N13HK01 | crystal |
| 30N99NA1 | crown - crown |
| 0G1400B01 | case back gasket |
| 0G1450B01 | case back gasket |
| DF04A | band - other band |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 1E200B102N | others - case |
| 1E200B10XS14 | others - dial |
| 82811350 | others - case ring |
| 05L07DGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0354930 | others - winding stem |
| 05V01DGM | others - minute hand |
| 1CA035A3BNG | others - hour hand |
| 2EA052A3BDG | others - minute hand |
Caliber 1E20
