The Seiko 7820-5270 is a watch model based on the 7820 movement.
Parts List
| SA1N90GN00 | crystal |
| 35R08NA1 | crown |
| 35R30NS1 | crown |
| 35R30NA1 | crown |
| 0H2800B09 | case back gasket |
| AV602 | band - leather band |
| AV612 | band - leather band |
| 11C16DGH | hand - hour hand |
| 11C16DGM | hand - minute hand |
| 7820527026 | others - case |
| 782053800134 | others - dial |
| 7820538032U4 | others - dial |
| 782053803444 | others - dial |
| 83107230 | others - case ring |
| A200CS | others - push pin |
| 0354780 | others - setting/winding stem |
| 0884738 | others - holding ring for dial |