The Seiko 2E20-6620 is a watch model based on the 2E20 movement.
Parts List
| REKN15JM01 | crystal |
| REKN15JM | crystal |
| 32N23NA1 | crown |
| 32N23NN1 | crown |
| 0G1500B01 | case back gasket - case back gasket |
| 0G1500B0 | case back gasket |
| B5583C-LKG | band - link |
| B5583C | band |
| B5583C-BK4G | clasp - clasp |
| DA007BA11 | others - crown and stem gasket |
| 0351205 | others - winding stem |
| 04L15DGH | others - hour hand |
| 0351207 | others - winding stem |
| 2E202070XN14 | others - dial |
| 2E2061 | others - machine code |
| 2E206620 | others - case back |
| 2E20662029 | others - case |
| 82830370 | others - case ring |
| T060BS | others - push pin |
| 04V23DGM | others - minute hand |
Caliber 2E20
