The Seiko 2E20-6881 is a watch model based on the 2E20 movement.
Parts List
| RE1A17JN02 | crystal |
| RE1A17JN | crystal |
| 30NA9NN1 | crown |
| 0H1600B01 | case back gasket - case back gasket |
| 0H1600B0 | case back gasket |
| Z5459K | band |
| Z5459K-LKG | band - link |
| Z5459K-PB1 | clasp - parts for buckle/clasp |
| Z5459K-BK4G | clasp - clasp |
| DA007BA11 | others - crown and stem gasket |
| 0351206 | others - winding stem |
| 0351207 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 81606899 | others - bracelet fixing pin |
| 82850710 | others - case ring |
| 2E202381XB14 | others - dial |
| 2E202381XS14 | others - dial |
| 2E202391XS19 | others - dial |
| 2E2062 | others - machine code |
| 2E206881 | others - case back |
| 2E20688125 | others - case |
| 04V19JGM | others - minute hand |
| 04L13JGH | others - hour hand |
| 2EC042A1BAA | others - minute hand |
| 04V39AGM | others - minute hand |
| 1CC030A1BAA | others - hour hand |
| 04L29AGH | others - hour hand |
Caliber 2E20
