The Seiko 7820-5260 is a watch model based on the 7820 movement.
Parts List
| SA1N84GN00 | crystal |
| 35M38NS3 | crown |
| 35M38ND4 | crown |
| 35M38NA3 | crown |
| 0H2800B09 | case back gasket |
| DA0070B01 | case back gasket - crown and stem gasket |
| CK982 | band - leather band |
| CK992 | band - leather band |
| 11C22DGM | hand - minute hand |
| 11C33DGH | hand - hour hand |
| 11C33DGM | hand - minute hand |
| 11C24DGH | others - hour hand |
| 0354780 | others - setting/winding stem |
| 0884737 | others - holding ring for dial |
| 782052604B | others - case |
| 782053600154 | others - dial |
| 782053703U84 | others - dial |
| 83107230 | others - case ring |
| A180CS | others - push pin |