The Seiko 1E20-6380 is a watch model based on the 1E20 movement.
Parts List
| K05N10JK01 | crystal |
| 30MB0NA1 | crown - crown |
| 0H1200B01 | case back gasket |
| TT62A | band - metal band |
| 04V42NAH | others - hour hand |
| 04V42NAM | others - minute hand |
| 0351931 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 1E202360XS24 | others - dial |
| 1E206380 | others - case back |
| 1E2063802N | others - case |
| 1E208 | others - machine code |
| 82830520 | others - case ring |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
