The Seiko 1E20-5729 is a watch model based on the 1E20 movement.
Parts List
| ESGN18JN01 | crystal |
| ESGN18JN | crystal |
| 30M68NA1 | crown - crown |
| 0H1300N01 | case back gasket |
| 0H1300N0 | case back gasket |
| B5363G | band |
| B5363G-LKG | band - link |
| B5363G-BK4G | clasp - buckle |
| 03V10DGH | others - hour hand |
| 03V10DGM | others - minute hand |
| 03V06NGH | others - hour hand |
| 0351931 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 1E201190XG14 | others - dial |
| 1E201350XY15 | others - dial |
| 1E205729 | others - case back |
| 1E20572925 | others - case |
| 1E208 | others - machine code |
| 82801840 | others - case ring |
| B5363G-ES | others - eyelet screw |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 03V20DGM | others - minute hand |
Caliber 1E20
