The Seiko 7321-5490 is a watch model based on the 7321 movement.
Parts List
| ESCN26SM01 | crystal - crystal |
| 30M64NA3 | crown - crown |
| 0H2395N01 | case back gasket |
| LK02C | band - band |
| 07T34DGH | others - hour hand |
| 0354735 | others - winding stem |
| 73215490HC | others - case |
| 82730320 | others - case ring |
| 73210920XN14 | others - dial |
| 73219 | others - machine code |
| A180BS | others - push pin |
| 07SC06DG | others - second hand |
| DZ0041B01 | others - crown and stem gasket |
| 07T34DGM | others - minute hand |