The Seiko 2E20-5559 is a watch model based on the 2E20 movement.
Parts List
| BA4N57JN | crystal |
| BA4N57JN01 | crystal |
| 32N23NS1 | crown |
| 32N23NA1 | crown |
| 0F130NA1 | case back gasket |
| 0F130NA11 | case back gasket |
| DA007BA1 | case back gasket |
| Z5166S-LKS | band - link |
| Z5166G-LKG | band - link |
| Z5166S | band - metal band |
| Z5166G | band - metal band |
| Z5166G-BK4G | clasp - clasp |
| Z5166S-BK4S | clasp - clasp |
| Z5166G-PB1 | clasp - parts for buckle/clasp |
| Z5166S-PB1 | clasp - parts for buckle/clasp |
| 2EA032A3BCA | hand - minute hand |
| 2EA032A3BCC | hand - minute hand |
| 03L01CGH | hand - hour hand |
| 03L01CSH | hand - hour hand |
| 03V01CGM | hand - minute hand |
| 03V01CSM | hand - minute hand |
| 2E200720XG18 | others - dial |
| 2E200720XS17 | others - dial |
| 2E20555925 | others - case |
| 2E2055592E | others - case |
| DA007BA11 | others - crown and stem gasket |
| 82731870 | others - case ring |
| Z5166G-ES | others - eyelet screw |
| 81180229 | others - bracelet fixing pipe |
| 81181459 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 81603979 | others - bracelet fixing pin |
| Z5166S-ES | others - eyelet screw |
| 1CA020A3BAC | others - hour hand |
| 1CA020A3BAA | others - hour hand |
Caliber 2E20
