The Seiko 1E20-5700 is a watch model based on the 1E20 movement.
Parts List
| K02N38HN | crystal |
| K02N38HN01 | crystal |
| 30M68NA1 | crown - crown |
| 0H1400N01 | case back gasket - case back gasket |
| 0H1400N0 | case back gasket |
| DZ0041B0 | case back gasket |
| Z5185G | band |
| Z5185G-LKG | band - link |
| Z5185G-PB1 | clasp - parts for buckle/clasp |
| Z5185G-BK4G | clasp - clasp |
| 03V12DGH | others - hour hand |
| 03V12DGM | others - minute hand |
| 0351931 | others - winding stem |
| Z5185G-ES | others - eyelet screw |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 82801540 | others - case ring |
| 1E201170XG14 | others - dial |
| 1E20570025 | others - case |
| 1E208 | others - machine code |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
