The Seiko 2E20-5580 is a watch model based on the 2E20 movement.
Parts List
| REEN07JN01 | crystal |
| 30N63NA1 | crown - crown |
| 30ND3NA1 | crown - crown |
| 0F140NA11 | case back gasket |
| 0E140BA1 | case back gasket |
| B5318G | band - metal band |
| B5318G-LKG | band - link |
| B5318G-PB1 | clasp - parts for buckle/clasp |
| B5318G-BK4G | clasp - clasp |
| 04V19DGM | others - minute hand |
| 2EE040LCBDG | others - minute hand |
| 04L13DGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 1CE027L0BDG | others - hour hand |
| 2E200750XG14 | others - dial |
| 2E20558025 | others - case |
| B5318G-EP2 | others - endpiece |
| 82731630 | others - case ring |
| 04V19JGM | others - minute hand |
| 04L13JGH | others - hour hand |
Caliber 2E20
