The Seiko 8N70-5020 is a watch model based on the 8N70 movement.
Parts List
| ES1A03S20A | crystal |
| 25M45DE4 | crown - crown |
| 25M45DE4C | crown |
| 0H2400N01 | case back gasket - case back gasket |
| LK37P | band - leather band |
| LK38P | band - leather band |
| A160AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 09T89JGH | others - hour hand |
| 09T89JGM | others - minute hand |