The Seiko 7820-5150 is a watch model based on the 7820 movement.
Parts List
| ES0N40GN | crystal |
| ES0N40GN00 | crystal - crystal (inorganic) |
| 35R08NA1 | crown |
| 35R30NS1 | crown |
| 35R30NA1 | crown |
| 0H2800B09 | case back gasket |
| BK792 | band - leather band |
| 11C16CGH | hand - hour hand |
| 11C16CGM | hand - minute hand |
| 7820515025 | others - case |
| 7820521032X8 | others - dial |
| 83107230 | others - case ring |
| 83579439 | others - battery hatch |
| A160CS | others - push pin |
| 0354780 | others - setting/winding stem |
| 0884715 | others - holding ring for dial |