The Seiko 2E20-6721 is a watch model based on the 2E20 movement.
Parts List
| RE0A15JN02 | crystal - crystal |
| RE0A15JN | crystal |
| 32N23NN1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| B5636K | band - band |
| B5636K-LKG | band - link |
| B5636K-BK4G | clasp - buckle |
| 2E202161XB14 | others - dial |
| 2E202161XG14 | others - dial |
| 2E2062 | others - machine code |
| 0351207 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81603979 | others - bracelet fixing pin |
| 2E20672125 | others - case |
| 82843310 | others - case ring |
| 2E206721 | others - case back |
| DA007BA11 | others - crown and stem gasket |
| 0351205 | others - winding stem |
| 2EA040A3BNG | others - minute hand |
| 04V31NGM | others - minute hand |
| 04L03DGH | others - hour hand |
| 1CA022A3BNG | others - hour hand |
Caliber 2E20
