The Seiko 7820-5130 is a watch model based on the 7820 movement.
Parts List
| RE1N08GN00 | crystal |
| 35R08NA1 | crown |
| 35R08NS1 | crown - crown |
| 35R30NS1 | crown |
| 35R30NA1 | crown |
| 0H2930B09 | case back gasket |
| BK772 | band - leather band |
| 10C20DGH | hand - hour hand |
| 10C20DGM | hand - minute hand |
| 7820513025 | others - case |
| 7820516032X4 | others - dial |
| 83107230 | others - case ring |
| A220CS | others - push pin |
| 0354780 | others - setting/winding stem |
| 0884710 | others - holding ring for dial |