The Seiko 2E20-6310 is a watch model based on the 2E20 movement.
Parts List
| ET4N33JN01 | crystal |
| ET4N33JN | crystal |
| 32N23NS1 | crown |
| 32N23NA1 | crown |
| 32N23NN1 | crown |
| 0G1400B0 | case back gasket |
| 0G1400B01 | case back gasket |
| B5534S | band |
| B5534C | band |
| B5534G | band |
| 1CA027A3BNG | others - hour hand |
| 1CA022A3BNS | others - hour hand |
| DA007BA11 | others - crown and stem gasket |
| 0351205 | others - winding stem |
| 04L05DGH | others - hour hand |
| 04V05DGM | others - minute hand |
| 2EA035A3BNS | others - minute hand |
| 04V19JGM | others - minute hand |
| 2EA040A3BNG | others - minute hand |
| 04V31NGM | others - minute hand |
| 04L13JGH | others - hour hand |
| 04V03NSM | others - minute hand |
| 04L07NGH | others - sub hand |
| 04L03NSH | others - hour hand |
Caliber 2E20
