The Seiko 1E20-5A20 is a watch model based on the 1E20 movement.
Parts List
| REGN39HN01 | crystal |
| 30N99NA1 | crown - crown |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0D130BA11 | case back gasket |
| TT21A | band - metal band |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 1E200B30XB14 | others - dial |
| 1E205A202N | others - case |
| 82811230 | others - case ring |
| 1CA025A3BNG | others - hour hand |
| 2EA035A3BDG | others - minute hand |
| 0354930 | others - winding stem |
| 04L03DGH | others - hour hand |
| 1CA022A3BNG | others - hour hand |
| 04V03DGM | others - minute hand |
Caliber 1E20
