The Seiko 1E20-6140 is a watch model based on the 1E20 movement.
Parts List
| K03N38JN01 | crystal |
| 30M98NA1 | crown |
| 0H1100N01 | case back gasket |
| DZ08B | band - metal band |
| TT28A | band - metal band |
| TT29A | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81182699 | others - bracelet fixing pipe |
| 81181459 | others - bracelet fixing pipe |
| 82734680 | others - case ring |
| 81609499 | others - bracelet fixing pin |
| 1E202000XS14 | others - dial |
| 1E202190XS14 | others - dial |
| 1E202380XS14 | others - dial |
| 1E206140 | others - case back |
| 1E20614025 | others - case |
| 1E20614025A | others - case |
| 1E2061402N | others - case |
| 1E208 | others - machine code |
| 04V10DGM | others - minute hand |
| 0351931 | others - winding stem |
| 04V10NGH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
| 03V20DGM | others - minute hand |
Caliber 1E20
