The Seiko 5P39-6020 is a watch model based on the 5P39 movement.
Parts List
| 255P05HN | crystal |
| 255W29HN | crystal |
| 255W29HN01 | crystal |
| 32M31NA1 | crown |
| 0F220BAA3 | case back gasket - case back gasket |
| 0F220BAA | case back gasket |
| 86583950 | crystal gasket |
| 86581610 | bezel gasket - plastic gasket for bezel |
| 86205711 | band - other |
| Z1421C | band - metal band |
| Z1421C-LKS | band - link |
| Z1421D | band - metal band |
| Z1421D-LKG | band - link |
| Z1421G | band - metal band |
| Z1421G-LKG | band - link |
| Z1421G-BK4G | clasp - clasp |
| Z1421D-BK4G | clasp - clasp |
| Z1421C-BK4S | clasp - clasp |
| 10T59CGH | hand - hour hand |
| 10T59CGM | hand - minute hand |
| 5P396020 | others - case back |
| 5P3960206Y | others - case |
| 5P39602075 | others - case |
| 5P396020XG14 | others - dial |
| 5P396020XN14 | others - dial |
| 5P396020XS14 | others - dial |
| 5P396020XW | others - case |
| 82340631 | others - bezel |
| 82340635 | others - bezel |
| 82340636 | others - bezel |
| 82812470 | others - case ring |
| EB0055B01 | others - crown and stem gasket |
| A140BS | others - push pin |
| EB0055B0 | others - crown gasket |