The Seiko 7321-5500 is a watch model based on the 7321 movement.
Parts List
| ESCN28SM01 | crystal - crystal |
| 30M64NA3 | crown - crown |
| 0H1970N01 | case back gasket - case back gasket |
| MK27B | band - band |
| 05T20DGH | others - hour hand |
| 05T20DGM | others - minute hand |
| 0354735 | others - winding stem |
| 73215500HC | others - case |
| 82730380 | others - case ring |
| 73210930XN14 | others - dial |
| 73219 | others - machine code |
| A140AS | others - push pin |
| 07SC06DG | others - second hand |
| DZ0041B01 | others - crown and stem gasket |