The Seiko 7820-5500 is a watch model based on the 7820 movement.
Parts List
| SA3N40GN00 | crystal |
| 35R30NA1 | crown |
| 35R30NS1 | crown |
| 0A2600N01 | case back gasket - case back gasket |
| YL01A | band - leather band |
| 11C08DBH | hand - hour hand |
| 11C08DBM | hand - minute hand |
| 11C08DGH | hand - hour hand |
| 11C08DGM | hand - minute hand |
| 7820550025 | others - case |
| 782056900S69 | others - dial |
| 782056903332 | others - dial |
| 83107230 | others - case ring |
| A190CS | others - push pin |
| 0354780 | others - setting/winding stem |
| 0884661 | others - holding ring for dial |